If only the film didn’t rush into these ideas and communicated them a little more smoothly, I don’t think what is falls apart, they probably drilled all those theoretical holes out with a room full of fact checkers while they tied the last bows, it’s weak on a more emotional level than a betrayal of logic. Like, I can buy Palpatine as this sort of lich wraith whatever if it was presented that way, but the movie doesn’t have enough time for itself so rushed Sheev return becomes awkward Sheev return and it cheapens the ultimate impact.