I absolutely love Attack on Titan and it's one of the best anime's I have ever seen. Even the clown show ending from the manga has been fixed to an great extent in the anime. The anime has so many excellent moments which are some of the best written scenes in anime.
The fanbase is insufferable though. It's either full of "Eren is literally me" mfs or glazers with no sense of reality and I'm pissed at liking the same thing as them.
How did they salvage the ending?
Removed the Armin "Thank You for becoming a mass murderer for our sake" and replaced it with Armin taking responsibility for creating Eren and not downplaying the severity of the situation which is far better imo and feels inline with his character.