It may feel like that, especially if you travel in circles where lots of people are as passionate about their disdain for TLJ as some folks here are. I think the more likely reasons are:
1. The box office has been pretty soft in general. Solo had about the same percentage drop from week 1 to week 2 as Deadpool 2. It also led the box office for its first two weeks (I haven't checked since). It's been #1, albeit in an otherwise anemic box office environment. So, is it the film, or is it just that people aren't going to the movies after kinda blowing themselves out with Infinity War?
2. The marketing for Solo was (apparently) not as aggressive as for TFA, TLJ, or Rogue One. As I've said, I'm not really in a good position to comment on that, since I'm mostly disconnected from the usual advertising outlets (I run ad blockers on my browsers, I don't watch live TV, I tend to mute commercials on what I stream, I read news online and most of it is just political news where Solo wouldn't really advertise, and I listen to podcasts that don't advertise movies). On the streaming stuff that has commercials, I started seeing commercials for it maybe...2 weeks before release? Prior to that, all I'd really heard about it was its production difficulties and people here complaining that Alden was too short for the role.
3. As has been said, while people may have ended up enjoying it, it was a movie nobody asked for, and it wasn't the novelty of the first non-episodic Star Wars film the way Rogue One was.
I do expect that Episode IX will suffer some from fans still pissed about the sequel trilogy, but bear in mind that by the time ROTS came out, there were PLENTY of fans who were pissed livid about the direction of the PT...and they still went to see it and the film still grossed $848M worldwide.
I also think that there's going to be a marked difference between the "Star Wars Stories" and the episodes and how they perform. It wouldn't surprise me if Solo only barely breaks $400M when all is said and done, putting it about $100M below Rogue One worldwide. Not a success, but perhaps not the dire failure it was hyped up to be.
