Probably just my personal experience but I've never heard profanity in the US as I've heard in Britain. I've overheard some next-level vulgarity sitting in pubs and they still manage to sound more sophisticated than Americans. 😊
Oh I agree with you. Not the looking more sophisticated part though. It's the old fashioned pub decor; the dark heavy wooden bar, useless brass accesoires around anything suitable, dark atmosphere, everyone sitting on top of each in a small place without complaining gives you that 'exotic' but evolved Victorian impression. The pub thing is Irish in origin as far as I know. ?Not sure. Most Americans I know would die in there without the personal space.
Going back to profanity, yeah that's another language in its own right. LOL