All good points, and yes, Theymos is very pro freedom of speech, which includes being able to express some rudeness. I wouldn't want this forum to be sanitized to the point where we constantly have to self-censor so as not to offend someone.
This can be a very prickly forum at times. We've got senior members at each others' throats and we've got shitposters and scammers being called out for it--it's hard to express genuine sentiment in those situations if your aim is not to hurt people's feelings and to be polite. It just doesn't work and frankly I wouldn't have it any other way. Either grow a spine and stick up for yourself or go find a nice forum about fluffy Disney characters.
OP, are you thinking of any specific examples you've seen recently? It'd be nice to see what you consider rude.