Tbh, the game didnt really do anything wrong, they just dont like Nomuras witing- well, thats a lie, the tangled and Frozen worlds were shot for shot the movie. The frozen world being THE WORST offender.
But other than that I've mostly seen them only rag on it because of Nomura. It's up to people's opinions on whether they like the game or not end in my opinion I quite like the game and I think it's pretty good. Especially the DLC Remind, that **** was the bomb
It could also be that they didn't play most of the games and if they did play the games they skipped around and only played the numbered ones or followed that dumb Twitter post of someone putting their recommended way to play the games which was all sorts of wrong. I don't know how you couldn't play all of the games when "the story so far" has all of them in one game that they can buy