unpopular opinion: the new ending makes sense(sorta)
The attack titan has the ability to see the memories of future holders. In order for Eren to have seen memories of his actions succeeding, despite him dying by mikasa's hands, someone would have had to inherit the attack titan after eren.
Now you might say, "doesn't the return of the tree invalidate eren's actions?" Well not entirely. The purpose of eradicating the titan's powers was that the eldians were being discriminated due to their connection to the paths. Mikasa's wish made it to where the eldians are stripped of their titan powers making them just normal people.
Ultimately, Eren succeeded in his aims; he created a good life for his friends. However he did this at the expense of the world. I personally loved the scenes that showed Mikasa returning to eren's grave throughout her life.
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I wouldn't say the ending is the best but clearly, Isayama isn't finished with attack on titan so I'll at least wait until his new stuff comes out before lambasting the ending.
I'd say overall I'd give it a 6/10
