Criticising people’s language without their context reminds me of Americans getting upset when they hear Spanish speakers say the word “black”.
Plenty of standup comedians use humor that I find distasteful or even offensive. I just read a book instead of watching them. Plenty of bars are frequented by people I don't like. I just go to a different bar.
No one has to visit WSB, but I'd prefer to live in a society that errs on the side of allowing people to congregate and communicate as they see fit.
As an aside, I've had to deal with two kinds of assholes in my life: people who use offensive language, and people who get offended at everything. I'd rather deal with neither, but if I had to chose, I much prefer the former.