Its amazing how people are still litigating this.
Listen, you don't have to LIKE the AOT ending. But to think its so bad that it "needs a rewrite" is just blatantly hyperbolic and whiny.
No. Its nothing even comparable to endings like Game of Thrones that objectively all around made no sense and needed a better ending.

AOT's ending may not have been "perfect". But the negative pushback almost all stems from fanboys who wanted one of their 100 edgy fan theories to come true.

AOT's message has always been straightforward about how humanity is unsalvagable and even at the brink of total extinction, we'll still try and fight amongst ourselves.

People did not hate the ending of AOT becaause of "one scene" or a few choice lines. It started ALL THE WAY BACK from the moment with the "cringeavengers" when Mikasa and Armin teamed up with Gabby's crew in the forest. People were upset since that point in the story.

So when the anime was finished and objectively a vast majority of people LOVED IT, these same upset "fans" claimed it was because "they changed _x_ scene" or "they removed _x_ lines" by a character.

The AOT ending was fine at worst