I think it's the other way around. For some reason if an American says something, the English come on thier tirade and shit all over us! English people have a serious problem, and not any other country really, when an American talks about soccer (besides Mexicans of course)
But I don't know where this concept that Americans don't know anything about soccer comes from. It's like telling a new employee he doesn't know shit about his job; yeah, because he's fairly new in the game. Keep in mind, that the MLS is a good 14 years old.