I happened to watch the video, which was a response to a Tiktok user badmouthing Youtube creators. I didn't really see any bullying, just funny retorts. I guess when it comes to Youtube, they just censor anything as long as enough people complain.
It's not perfect, but nothing YouTube does at this kind of scale will be.
jwz wrote about this years ago as well (and there are many more stories): https://www.jwz.org/blog/2014/10/youtubes-joke-of-a-fair-use...
That being said, I feel too many people fail to appreciate the problems YouTube is facing and are too quick to simply shout "censorship!"
Ironically, I hear about this fact every time Youtube makes the news for ... you know ... moderating all of that.