Maybe it was just the kilt, or maybe it was something else -- attitude, drunkenness, whatever. Either way, by saying that he's not welcome in his kilt, what does that say about Scotland?

To me, it says, in this tiny example, that Scotland is forsaking its national dress. It means that if I hear some Scotsman complaining about me stealing his national identity, I'll have just that much more doubt about the legitimacy of his complaint.

Evidence is mounting that the kilt doesn't belong to Scotland any more.