I can't speak for everyone, but the transition from one version to another loses almost as many features as it gains. It is especially crappy about its provided sprites, to the point where we keep losing entire sprite types, many sprite sets are just plain unfinished or untested, and they insisted we move from sprites that people could somewhat take seriously to chibi/moe sprites that nobody on Earth can take seriously for an adventure game.

Another issue is that the series keeps releasing new versions that are incremental improvements at best, and they want us to pay a lot of money for each installment and half-sequel with said very few improvements, and also pay for a lot of content packs. There are things that should have been added 15 years ago and still aren't here. They can't even allow us to customize menus, and countless other issues. Honestly the dev team seems like they're not very good at programming or art in the first place, and they're just raking in money from incremental improvements over many decades. People try to excuse the engines' lack of basic features with "but you can program it in Ruby/Javascript yourself!" Which is a really bad thing to rely on for a game-creation engine of this type.

I'm sure other people are annoyed by things I'm not even thinking of right now.