It all comes down to what we would have preferred for the conclusion of this 9 part Skywalker saga. Lots of people (like me) wanted the new stuff to come in different projects. Then lots of others, like you, wanted to get to that new stuff ASAP. The only reason I’m not in that category is because I think the purpose of the sequels should have been to explain any lingering mysteries left in Anakin’s story, and how that affects his family. Then, at the end (not the middle 😉 ), leave the door open for different stories than the Skywalkers. Which is exactly what we are doing with this edit. Palpatine’s return is now justified in this story in order to explain Anakin’s conception and what went wrong with the supposed chosen one.
Don’t get me wrong, I’m not against new stuff. I’m probably one of the only people in the “toxic” side of the Star Wars fanbase kind of excited for where Star Wars goes next with the Acolyte, the Rey movie, etc. But they shouldn’t have initially marketed this trilogy as a continuation of the Skywalker saga if they weren’t going to follow through on that with their main character. That’s probably why they tried to be cheeky with their ending scene in this movie, so they could claim this is still the Skywalker saga, but it just doesn’t work for me unless there’s some level of truth to Rey’s claim.
But, hey, at least both sides seem to be somewhat satisfied with this alternative idea!