Here's a post on Instagram where she talks about her situation with Twitch, and how she took steps to wear non-revealing clothing and still got banned: https://www.instagram.com/p/CBw5k8MHy_Z/
The reason given by Twitch was "Sharing or engaging in sexually suggestive content or activities": https://www.elecspo.com/news/velvet_7-banned-twitch-fans-protest-punishment/
I found a video of one of her Twitch streams: https://www.youtube.com/watch?v=vFqps7zSXzA
I suspect that the analysis in the video description is correct. Even though she is not wearing anything revealing, because her breasts are so big, she can make them bounce around just by dancing.
If a girl with small breasts did the same dance, I don't think Twitch would bat an eye.
Yet Twitch can't come out and say "you're not allowed to dance because you have big breasts" because that's discriminatory against certain body types.
I'd like to see what the HN crowd thinks of all this, from a censorship perspective.