"Politically correct" is as misunderstood and misused as "pretentious."
I don't really think so, this forum is very strict on being sensitive to any culture aside the ones that go against the majority of the cultures here. If you're a religious person, you likely don't get to have an opinion here if you practice the views of your faith, are you a furry? Well you used to be a running joke here, but sensitivity tells you now that being that is ok and acceptable behavior. I'm not sure if bannings take place for people who would say, I think that's weird or poke fun at that community, but I could definitely see it coming down to that if it hasn't already.
The fact is, one of the social crutches many use is to poke fun at groups they deem strange, and in the end the group that doesn't do that is the one that is protected every time. People make fun of fat people, gay people, gamers, religious people, etc, and on this forum, some of that is ok, and others it's instant ban if not perma ban depending. Just the other day people were ragging on pale people. I'm pale, I don't want people who poked fun at pale people to be banned and made example of, I just make my point to them if I find it worth noting and move along. Then again, the witch hunt/feed X user to the lions doesn't get me going either which seems to be about what half of this forum ultimately wants to have happen. In reality, the terms of service might as well just say you're not allowed to make fun of anyone, because inevitably, someone on this forum will be potentially sensitive to any form of insult, so just don't make fun of anyone ever.
Thankfully, I'm agnostic so the slights against religious views are not a personal bother, but when one moment you can ogle a hot girl and make a joke about masturbation, and suddenly that's bannable the next day, I think it's a bit unusual and yes, perhaps a bit PC. It becomes more and more censored to a point that someday, this is going to be like a gentlemens club where only the highest dialect is allowed.
Perhaps that's what people want though, in the end the majority view will be what wins out, and you either learn to adapt, keep your mouth shut, or get banned. It's then up to how much you enjoy being part of the community.