Its a funny coincidence people use this game to bash and hate on Pokemon Sword and Shield, the same toxic arguments made by them can be applied to this game, namely performance issues (which happens during the entire gameplay in this game, not just when connecting online at the wild area in Sword and Shield), the element changing system for monsties is incomplete and buggy (nothing is bugged this badly in Sword and Shield. EDIT: it has been clarified they are removing the feature of changing monstie color and element and it was in by mistake.), and not all monsters are in the game despite monsters count is much less than the amount of Pokemon that exist, and also they re-used animations (which is fine by me, just pointing it out).
Negative toxicity aside, the graphics and animations are nice, but you'll be skipping animations eventually anyway, the story is good and there's a decent amount of things to do post-game, all in all this game is excellent, just like sword and shield.