I was going to add, if an outside entity (ISP, third party administrator, etc) objected to the content, they’d be much more likely to just block the page entirely, rather than censor parts of the video stream itself. Same with CB. If they don’t like something on a stream, they’re probably going to shut it down entirely rather than try to censor a live broadcast while it’s happening.
So to OP’s question, any censoring being done on the model’s side is not only legal, but probably also a good idea, given their local laws.