Am I misunderstanding what you mean by "insisting"?
Yes. You're also ignoring the issue of cultural mores in favor of a perspective in which niceness and functionality are non-subjective qualities, the subjectivity of which was my point which you claim not to have missed.
The thing about mores is that to some extent they're trying to solve coordination problems, and they do that better when people are more willing to adopt common mores -- and if you have a large majority on one side then, annoying though it may be for the other guys, it probably works best overall for them to do most of the adapting.
"Rudeness" isn't a coordination problem, except insofar as it's a coordination problem of taste.
Yes.
Is there a reason why you didn't follow that up by explaining what you did mean by it?
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