Forgot to mention that I finished Attack on Titan, including the Fourth "Final" Season, the specials, and the Fifth/prequel/actual final season. Talk about confusing.
So...yeah. Spoilers ahead.
Generally speaking, I hate the following in any media: clones, alternate realities, and time skips. AoT has the latter, in which season 4 picks up 5 years after season 3. Although the author of the manga has stated that he knew how the show would end, it honestly feels like he had an epiphany following a long break of writing where he just said, "screw this, I'll subvert expectations." Because of the drastic change in some characters, it doesn't feel as fleshed-out as it should be, especially considering how well-paced the previous seasons were. There's a ton of lore, revelations, and motivations to unpack, and it's so dense on the whole it's hard to start. I'll keep this concise:
Eren's turn to tyranny isn't a shock, given how his vengeful side is such a major component to his character. However, his long-term planning to get to this endgame doesn't feel earned based on his (to this point) short-term thinking process. Eren has been consistently portrayed as impulsive, reckless, and emotionally immature, and suddenly becomes a stoic strategist with the flick of a switch.
The biggest issue I have is how everyone (ESPECIALLY Armin) is willing to give Eren the benefit of the doubt FAR too often, with the rest of the crew joining in without critical thought. Again, especially in Armin's case, this doesn't feel earned. Armin is the moral backbone of the scouts; he's the first to speak up and avoid unnecessary carnage to approach things from a diplomatic angle. That all gets tossed out the window with his participation in Eren's initial raid, and constant speculation about how Eren might somehow be in the right or planning at something else that they just can't see yet.
I mentioned in an earlier post that I'd rewatch this, but it's exhausting just remembering the 4th season and how depressing it is. The Fifth season with the prequel episodes (Levi's history prior to joining the scouts, Jean and his mother, etc.) were a return to form.
And last but not least, the ending credit scene where a plane flies into a building and begins a terrorist war? GTFO.