It's back to film school. Time to review movies where the main character is not the one with all the dialogue, not the one with an arc, but the fulcrum around which other people have dialogue and arcs. The context for others' stories. A recent good example of this is Captain America. In TFA, TWS, CW, IW, and EG (and, after the fact, F&WS), Steve remains the same throughout. Sure, he gets a power-up, but he knows who he is and keeps being that at the universe, no matter how much the universe throws at him or how badly beat he gets.
Bucky is the one with the arc.
Or, over in Leone's Westerns or several of Kurosawa's films (and used to good effect in Usagi Yojimbo by Stan Sakai), we have the terse, unspeaking protagonists. Others get the dialogue, even having whole conversations with the main character by themselves with the main character communicating by
not speaking.
That's one of the things the Twin Engines of Destruction comic did well. Fett had very little dialogue. On his ship, most of the talking was done by Dengar. Hell, even in AOTC and his first episode of Clone Wars, Boba hardly spoke. I didn't like how talky they made him later in the series. And, as much as I liked seeing him in ROTJ in '83, it never made sense to me why he was there. Maybe if it had been plotted out better -- if the rescue of Han Solo had been the entirety of that episode as originally thumbnailed before George decided to cram all the rest of Luke's arc in so he could be done with Star Wars... Maybe his presence could have been made sensical. Maybe he hung around after handing Han over because he knew Han's friends would try to rescue him and he wanted the bounty Vader likely had out on Luke (and Leia?) by that point or something. Maybe he'd struck a deal with Jabba, and was quietly fuming at Jabba's emotional reaction to attempt to kill Luke -- twice -- and their escape plan going into action was his chance to capture Luke to deliver to Vader alive, after all. But what we got didn't convey that -- at least, not remotely clearly, if that were the intention behind Fett being there at all.
Add in the SE addition of ROTJ Fett to ANH and the out-of-character bit of him chucking the chin of one of Jabba's dancers, and before we ever met his young self in AOTC, I had come to solidly feel ESB Boba and Tatooine Boba were actual separate individuals. Particularly with Twin Engines of Destruction coming out that same year and showing us Fett going after someone pretending to be him.
So Boba -- if, indeed, the guy in Jabba's court who took the header into the sarlacc really
is Boba Fett -- has by the OT figured out exactly who he is and how he expresses that to the outer universe.
Maybe he can have an arc, post-sarlacc, and perhaps even akin to what we got in the EU where he is forced to confront his identity and heritage and finally starts to let his shell crack a bit. But
starting with him relaxed and chatty is utterly the wrong way around.
What is established is exactly what was said by the person you quoted. In that film, Boba was the only one -- protagonist or antagonist -- who accomplished his goal (except maybe Piett's goal of getting promoted and staying alive -- at least until the next episode). Everyone else lost. The thematic and visual storytelling of the film established that this guy was supremely competent. More competent than the other bounty hunters (a sequence was unfortunately cut where IG-88 knew Fett's proficiency and decided to track
him, on the supposition he'd lead the droid to the quarry and then IG would be good enough to take the prize itself). More competent than Han, who had been evading bounty hunters since the end of ANH -- established by dialogue in both films. More competent than Vader who had found and managed to lose the Rebels (or, at least, the only one he really cared about, and then his best means of finding that one). Even more competent than the central Hero of the cycle, Luke Skywalker. In the halls of Cloud City, he knew Luke had landed, he doubled back and effectively discouraged pursuit. Whether he knew Lando would try something, he got to his ship unmolested and calmly departed with his prize and his first payout of the job.
This is also, by the way, after Lucasfilm had been playing up Boba Fett for more than half the time between the release of Star Wars and the release of Empire. Rolling out the early version of the costume and having him appear with Vader in the San Anselmo Thanksgiving parade in '78, right around the same time he was featured in the Star Wars Holiday Special. Kenner had the mail-away promotion for him, when no other characters from the upcoming Star Wars 2 had action figures yet.
So there was a definite gravitational center to the character, from superficial moviegoers seeing the cues I mentioned onscreen, even if they didn't register them, to people who were more invested in the fandom recognizing a familiar character to them that they'd been waiting to see again for a year and a half.
Motivations don't matter in the context he was presented. By giving him more than the one scene on the bridge of Vader's ship, he was visually elevated in importance above the other bounty hunters. By giving him lines, he was elevated over all the people on-screen who had none. By having him survive, he was elevated over all those who were sacrificed to the Hero Shield -- including Dack and Zev, as well as Hobbie and Veers in the original cut. And then, by having him succeed where everyone else failed, he left people -- consciously or unconsciously -- registering him as someone to keep an eye on. That we
didn't know his motivations (or past, or present circumstances, or family, or anything) is what gave such an important character to the story and Our Heroes' fates within it his air of mystique. The Powers That Be need to then be careful in peeling away that mystique, lest it ruin the character.
George... wasn't. Boba Fett had grown out of the moviemaking process. For Star Wars, Vader was originally envisaged as someone working
with the Empire, not a part of the command structure. The words "bounty hunter" may or may not have been floated. George had come up with the idea early that a squad of elite Imperial Supercommandos from Mandalore tracked the Rebels to their new base. As the script evolved, those elite forces and their Mandalorian origin were split. The elite forces became Veers' Snowtroopers, and the Mandalorians were condensed to one, who was given Vader's original rôle in the first film. From seeing all the work that went into the Supercommandos, I am curious how much of Boba was George and how much was the combined weight of Joe Johnston, Alan Harris, Sandy Dhuyvetter, Ben Burtt, Duwayne Dunham,
et al.
It is on record that George considers Empire the "weakest" of the six films he made. In large part most likely due to his lack of direct control (he wasn't the sole writer, he wasn't the director, etc.), but I wouldn't be shocked if part of that, whether he's able to elaborate it in words, is what I and
BobaFettSlave_1 said -- Boba Fett took the attention of George's characters and made them look like chumps. There are noises from people in a position to know that George resented that, and Boba's popularity distracting from the Hero, that he included the character in ROTJ specifically to kill him off. And then the EU brought him back five times over (Marvel even had him escape the Sarlacc only to get knocked back in again). When George made AOTC, early publicity materials, like the pre-release Jango figure's cardback, referred to Jango as "the last Mandalorian". George tried repeatedly to stamp them out, and EU creators kept finding ways around him. Dave Filoni's fondness for them is well-known. He had to have wanted to include them from the beginning of The Clone Wars. I am willing to bet we had to wait until season 2 because Dave and George were going back and forth, with George ultimately prevailing with the New Mandalorians and those armor-wearing throwbacks a group of fringe radicals. Given how much
that shifted over the series, and in Rebels, I'd be curious to know how George feels about it all.
But, at the end, what was established was that Han and Boba were both "simple men trying to make their way in the universe". Both lived on their ships, both did what they knew how to to survive by their wits and reflexes. Regardless of the action going on around them, Empire was a
pas-de-deux between the two.