Honestly, there's so much anti-Americanism on this website. American 'culture' is a synthesis of loads of different cultures, because America is one of the most diverse places on the face of the earth. The average US citizen is probably no stupider than the average Briton. All those smug little "only in America" epithets that give people a false sense of pride in their own national shortcomings are just that: smug and arrogant. As I said, America is one of the most diverse countries on earth, and to claim that there is such a thing as a monolithic block of culture is ridiculous.
And 'culture' is one of those buzzwords that everyone thinks they know what it means, but actually it's impossible to truly define. Culture is an idea, yet people treat it as though it is an objectively definable 'thing'. That attitude is no different to the BNP supporters of this world, who believe that English culture should be wrapped up and giftwrapped, when in truth it can't and shouldn't be.
You just got postmodern'd.