Generally I don't care about words like bitch, fuck, shit, but there are certain servers and communities where cusses or other words are used harmfully towards groups that the community or server is inteded to be a supportive place for, and when they come up in discussion, even just as examples as what was said to them are rightfully censored or have a trigger warning placed in front.
Community mods and server operators can get overboard with this but they get that privilege because they do the work to moderate it anyway.