Is sex while sleeping really that bad with consent?

So I just found out that Pornhub banned all videos of sex while sleeping and I think that it's ridiculous. I am all for consent, setting and boundaries safewords etc. I don't really care since it's not my thing but I am very into bdsm overall so I am a little nervous that they will soon target that as well. On the similar note I think there are much more extreme videos than sex in sleep. Some I can't personally watch because I don't really think they consent but it's their life not mine. Same with sex while one is sleeping. If they both agree to it I can't see the harm of doing it from the moral perspective .