The Last Jedi kind of wrote the saga into a corner and left people dumbfounded. Remember all those theories After Force Awakens? Remember how there were almost no fan theories after TLJ and most of them were questions about how the hell were they going to save themselves from the plot points TLJ stated?
I believe there is no possible way that TROS would have given us a satisfying ending, and most of the complaints on it being about how poorly they handled the trilogy is my biggest reason to think that.
This is kinda how I feel. Star Wars fans got the reputation for being whiny babies that they don't entirely deserve. They treated the movies like art and got treated like wallets. They wanted to see amazing stories and got kids' toys already in the first trilogy, and it kept getting worse. George Lucas kept editing the material because of his insane ego. They sat through three movies of shit prequels, bought and read EU material to only have it handwaved away as not canon anymore because a conglomerate literally bought Star Wars, said "okay I guess they have something better to do with this universe that other creators have been doing for so many years, let's hear them out" and got a trilogy where at the very least each succeeding movie disrespected the previous one, at least a little bit.
I'm not even in the fandom proper, and I feel kinda bad for fans, because when they pipe up to call a spade a spade (or, in cases of Rian and JJ, and JJ and Rian, call them two directors that don't entirely respect what the other did in the trilogy, two times over), they get called unreasonable haters. If Rey's parentage isn't important, why did they set up the mystery in the first movie, answer it perfectly (if not entirely congruently with the imagery of the first movie) in the second movie, and then negate the entire message that came with the answer in the third movie? It wasn't just a parentage reveal, it was a whole trilogy-defining moment in the message, and the third movie should have went with it, and it's not nitpicky to feel this way. At the very least, they didn't have to go with "oh btw Palps is alive and he has procreated", that's about as legitimate as "oh btw Luke has a son, there he is! oh and here is Toby wan Kenobi, Obi's nephew". And even before that, the second movie could have went with some stuff set up in TFA.