The assumption seems to be that since blacks (and, presumably, other minorities) are appearing more in the “main stream,” the only logical conclusion is that some blacks, at least, have finally decided to change their ways and do a better job of blending in. There appears to be a deliberate effort to ignore the fact that what is now mainstream is a better blending of different cultures rather than being the exclusive domain of any one culture.
Or, as WordMan put it in the thread:
I agree that the badger in question is mistaken about whose head is where. It’s hard not to see willful ignorance in missing minority influence on current American “culture and language.”