Why is R so common and even glorified in manga

When watching a crime related video about illegal sex chat rooms, blackmailing, sexual asaults etc. I realised that it's so fucking common. Especially in the whole yaoi category. Why do so many of these so called authors write r scenes that don't even make sense. It feels like they are relieving their sicko fantasies by making such stories and releasing it to the public. Sure, it may be so important for the story development. But honestly, is it always like that? Are there truly no other options to develop the story besides r. I've seen so many of these bs stories that would have the other character be assaulted and the comments would be like ,,oh, but he didn't complain. He enjoyed it. He consented. It's a part of the story" like be ffr. There is a line between assault that's been added there for the sake of the story with actual plot. And assault that's been added there just for some horny fucks to relieve themselves.


Also I'm writing this in a hurry, my apologies if shit doesn't make sense