*sigh* Yeah, that tends to pop up alongside the "Sonic had an expiration date" type talk as well.
Lot's of people going in already deciding they hate something no matter how it actually plays, just off of what opinion they think it's "cool" to have.
Or never playing it in the first place. I'm still pleasantly surprised that I could get someone to go from "Pokemon is weird" to "Well I still hate Pikachu and don't want to watch the anime, but that was actually really fun," so there could be a certain element of Green Eggs and Ham to the Sonic mess as well.
Wish people would just stop parroting everything they hear. Or being ultra-vague for that matter, it's pretty easy to move goalposts when you never specify what's "wrong." Except apparently Sonic having multiple playable characters, which they've "fixed" and has mysteriously done nothing to the general opinion of Sonic even as fans of characters playable since the second game are facing spending the next 25 years never seeing them again outside of maybe Taxman stuff and spinoffs. :/
If you mean alternate gameplay styles then say alternate gameplay styles. Between Sonic and to a MUCH lesser extent Smash, I'm under the impression that video game developers are Literal Genies that people have no idea how to say the right thing to. It's a miracle Breath of the Wild was apparently actually generated out of an attempt to address complaints from it's series' last game even as internal issues proceeded to mirror another common fandom issue of never bothering to say what it is they actually like.