Daisy herself said the story changed from film to film. First she was supposed to linked to Obi-Wan, then she was no one, then they made her the Emperor's grand daughter, and even that idea wasn't set in stone during filming. It's one thing to alter certain elements of a trilogy during filming but those are fundamental structural issues that have drastically different outcomes with the plot, so it's hard for fans to get on board when it's clear they were making it up completely on the fly.
There really is no way to negate this, especially when it's coming directly from the source.
Someone could argue, "But the OT had the same issues during filming/planning! Anakin Skywalker and Darth Vader started out as separate characters! Vader wasn't originally Luke's father! Luke and Leia weren't twins, the Other™ was a totally off-screen character named Nellith! Lucas flew by the seat of his pants the whole way too!"
Yeah, he did, and by some miracle it still
mostly worked out - debatably so, but mostly. However, given that SW is
now an established franchise, that's no excuse whatsoever to repeat the same mistakes and risks. You can't capture lightning in a bottle, and you certainly shouldn't play Russian roulette even if the first guy got away with it successfully.
When there's billions of dollars at stake, you should hammer the major plot points and characters out solidly before ever getting the camera involved. I'm not saying play it "safe" for the sake of profit margins, I mean play it
smart. Lucas was an independent young filmmaker - Disney is a literal entertainment Empire. You wanna maximize your investment? Don't pull the kind of shenanigans Lucas did and hope you'll be as lucky. All of these missed opportunities and inconsistencies could have been avoided.
We give Lucas a "pass" because he was the originator of this universe, and the earliest trilogy is set far enough in the past that kvetching about the disjointed approach is pretty moot at this point - these movies are well over 40 years old. Ding, fries are done. I don't think even Lucas himself repeated that many of his own faux pas when working on the PT - it'd be the equivalent of creating the character of Padmé Amidala as a standalone unrelated to the Skywalker family and then halfway through AOTC deciding that THEN she's suddenly the mother of Luke and Leia, for example.*
(*
The PT has plenty of other issues when it comes to not quite fitting in with the OT, but I'd argue that they're relatively minor in comparison, at least enough that it doesn't completely violate the saga to the point where it's unacceptable. It's annoying and I don't necessarily like it, especially when it wouldn't have been difficult at all to MAKE them fit, but it can be mostly handwaved.)
Also remember that Lucas was operating under a gambled situation - there was no certainty that SW would be a hit at all, let alone make back enough to cover costs. We can forgive him a little for starting out with a somewhat incomplete picture of the story and characters when he had no idea whether he'd be able to continue it past the first film. Once it blew up and he realized he could keep it going, it's understandable he'd start drawing different conclusions that could enhance the story far beyond what it originally aimed for (or wrap it up prematurely to its detriment when he burned out and was having personal difficulties). Disney was SO far away from this scenario it's laughable.
This was a fresh start and a new age under a mega corporation. Disney was so busy crowing about continuity and how they were going to do such a better job with their entire interconnected universe - and then they couldn't even bother to tack down their new protagonist, at bare minimum. It's embarrassing and infuriating.