The previous movies can't exist in the same universe as pre-Disney Star Wars. In pre-Disney even the chosen one needs training to learn how to use the force like every Jedi and Sith needs to do anything advanced. Wisdom gained through learning from other force users, and experience with the force, over years. The light switch to advanced powers the instant Rey learned the Jedi aren't a myth cannot exist in the same universe, and it breaks any illusion of a consistent world.
If they were going to have legacy character to get butts in seats, the last thing anyone who came to see those characters wanted was character assassinating them, and offing them. Passing of the torch can work, but it never works like that. That wasn't the real Han, Luke, or Leah even. They undid Han's redemption arc and offed him. Luke who saw the good in Darth Vader suddenly tries to off Kylo because of a dream. With "somehow Palpatine returned" they also wrecked Anakin's character arc that goes through all non-Disney Star Wars movies, and invalidated his sacrifice.
It's not just my taste. They made objectively bad decisions that the majority of moviegoers wouldn't like, and didn't follow basic world continuity rules. Disney buys up ips they don't understand, and thinks having what are said to be the characters, and looking like the thing, is what matters, not staying consistent with the story's themes and values, or the classic characters actually acting like themselves. That's why most reboots, and remakes are trash.