Yeah, some people didn't really like Gates to Infinity that much, and I hear them. I'd say there's a lot to like about Gates to Infinity, including Companion Mode and the 3D backgrounds of the dungeons, not to mention it has quite a few musical tracks that are nothing short of phenomenal (like Bittercold Phase 2, which I would dare to say is among my top three favorite tracks in this entire sodding franchise).
But there are downsides to it, like the fact that there are so few Pokémon that are playable, not much post-game, and not being able to be female. But Jesus tap-dancing Christ on a stick, THE worst thing about the game imo is the slow text speed during the cutscenes that you can't speed up by pressing A. BW's hand-holding may have been obnoxious at times, but at least it wasn't this.