This is a very stupid statement.
Every country that uses English as it's native language (United States, Australia, New Zealand, Canada, etc) has a variant of the English language with it's own idiosyncrasies. In Australian English, it's perfectly acceptable to use 'suicide' as a verb as opposed to 'commit suicide' in other English forms. No one is superior to another. In fact, there are more native American English speakers than supposed "Queen's" English speakers. So you tell me which is "proper".
What you're perceiving as bad "American English" are the people who bend and destroy the rules. That's the fault of the educational system, not the society. Trust me, British English can be just as mutilated.
This opinion is coming from a self-proclaimed grammar Nazi. If I can have a live and let live attitude towards English dialects (and they are dialects), you can too. :-)