I am always grateful for a positive response, but I'm afraid I didn't express myself as clearly as I should have. I think the author’s labeling of standard English as "white speech" is spot-on accurate. In fact, standard English even excludes many white people, when it includes accent. One of the privileges that I didn’t list in my profile is that people say that I don't have an accent. What that means is I speak the same way as the north eastern WASPs who dominate American Culture, Industry, and Government. Consequently, people traditionally assumes that the way I speak is correct, and everyone else is deforming that correct speech with their “accents". Because of my accent, I am granted a certain credibility that I didn’t earn , which gives me a privilege not even shared by powerful rich white men like Bernie Sanders, Jimmy Carter, Bill Clinton, or Donald Trump.

There does need to be what you call a lingua franca, but there is no reason that the way I speak should be it. My point is that once people stop code switching, the natural grace and eloquence of African-American vernacular English will probably enable it to dominate standard American speech the way African-American music has dominated American music. And when that happens, I am suggesting that African-Americans should welcome this, rather than see it as some form of cultural appropriation.