If you just hate Palpatine’s return because it was in the EU, then fine. But Darth Jar Jar is an objectively worse idea, purely because Jar Jar has never been established as a villainous force. And I’m not too concerned about “diminishing Anakin’s sacrifice”, since the whole Chosen One thing was a dumb idea in the first place.
It’s not because of the old EU that I dislike the idea, I’m saying I disliked it then as well. It’s not about him being the chosen one, it’s about that film‘s ending being undone and not being able to come up with another villain… like, I don’t like when these stories seek to make that universe smaller, and one overarching villain across the entire franchise is pretty reductive.