If you read beyond the title of the question OP put up, they appear to be pointing out how they dislike that the game puts forth as a universal truth that to end suffering is to embrace annihalation.

"One thing that's bothered me since beating the story is the whole we need to suffer to learn and live angle.
Or how the last dungeon and meteon pushed that things got too good and people just gave up.
Our whole deal is fighting to solve issues and make things better, we've traveled through time, space and reality to make things better, to win, to keep marching toward a world where things are better and we're not needed, one where no one needs to fight.
So doesn't that mean our endgame would lead to annihilation?"

And they are right. The path of the WoL would doom all existence to death because they fight to try and make the world a better place without suffering. And per the lore in the game that is bad.