Fair enough. I was mostly reacting to the 2nd sentence. I guess I'm not sure what your primary thesis was. I agree that you can distinguish between civility and nicespeak, but mostly because I see nicespeak as a form of civility. I don't see civility as requiring sincerity. When we ask someone to keep things civil, we aren't asking them to be more sincere. However, I can understand having different connotations for the word and I wouldn't really want to quibble about it.