It really was, to the point where the final arc of series managed to take the overarching theme, moral, and original premise of the entire story, and just flush it down the toilet.
Outside of "never fall in love with your rapist", and "never set free livestock", the overall moral of AoT pretty much ended up being this:
"Never try to expand your horizons ever. Don't fight for a better life. Don't try anything new. Just stay in your fucking lane and do nothing. As a constipated manlet once said, just
give up on your dreams and die because your life could be so much fucking worse, you ungrateful bastards."