I met a rude British man once. He came into a video store where I was working as a clerk with his kid, and as I was checking him out he was ranting about stupid Americans and how all of us think all British people are like Austin Powers. He was fit to be tied and I don't think we even had the movie in rotation to be played at the time. I kept my mouth shut and just got him out as fast as I could.
I met ONE rude British man. I've met a lot of other British people since who are wonderful. I suspect if he went everywhere with that attitude, he met a lot of hostile Americans who gave him exactly what he was expecting. In a lot of places, you're going to get what you give and I think that's what was happening with the sugars in that other post if they're not just copypasting. I am a firm believer that you will get out of something what you put into it, and when in Rome, do what the Romans do. If only a couple of people tell you you're being rude, you might blow them off. But if all of them are doing it all the time, YOU have a serious problem. Not the culture, not the people, YOU.
YOU, Meghan, and YOU Harry, and YOU, guy at the video store. (Yeah I'm still pissed about video store guy)