For a practical example, nearly every single Black man who succeed(ed) in America doesn't speak so-called "Negro English", they all speak "normal" English. President Obama is perhaps the most familiar example. I have no doubt at least some of this is them putting on an act to demonstrate they are in the same social class as their would-be peers.
And on the other side of that coin, lower class Black men generally disparage characteristics of the higher classes such as being educated and carrying yourself more formally.
For better or worse, if you want to join a different social class you have to put up some act to get your foot in the door. Otherwise you'll be kicked right out. It's brutally unfortunate, but humans (and all living beings in general) prefer those who are alike and disdain those who aren't.
Hell, the audience here should look at themselves in a mirror: White shirt upper-middle class discriminating the elite upper class and the commonly middle and lower classes is everywhere. Screw those MBAs, amirite? The problem is Joe over there doesn't understand tech, amirite?