Sorry, but you’re emphasizing his point. “the owner can just go F himself”??? Really?? Maybe its just an elderly proprietor who prefers a nice sleepy pub for the town folk, and is tired of dealing with obnoxious Americans. Given your response, i’m now much more sympathetic.
I suppose you’re right. Just a visceral reaction to someone singling out Americans while ignoring the adjective “loud”. I’ve been embarrassed enough times by compatriots who should have been refused passports or barred from their flights to have known better.