I am a barbaric German but at least I am not a jingoist.
I know you were being funny but I found Germans to be very curteous and kind while there - about 18 mos in the late 1980s.
I do think we Americans tend to be a lot more casual about word usage and don't always think about the origins of words and phrases.
I am a fan of the idea that language is organic and rules; while useful, don't always sucessfully convey new ideas. New uses and vocab would seem like a sign of growth and therefore an indicator of good health, in spite of all the moaning and pissing about the decline of the tongue, blah blah blah . . .