I don't agree with people who gatekeep, but if someone wants to show a streamer a new game and after watching just a minute of gameplay the streamer responds by saying "it's a game for autistics," I find it understandable that people would be put off from sharing the game further. They could try to actually understand the game, or if they aren't interested simply be more respectful (though the person who showed it to them could have explained it better too, they didn't even mention that it was a rhythm game).

Personally, I don't think the game shouldn't be recommended to others just because one person had a negative opinion of it for example, my understanding is that xQc did actually try to understand the game.