Earlier quoted context omitted.
It’s about class. Not in the usual American sense of how much money you make, but in the older sense of people thinking they are better sorts of people because they have the correct diction, education, religious views, professions, and so on.
Indeed, and someone with money and a desire to prevent actual class conflict can get a lot of mileage out of encouraging tensions in the narrow, purely expressive sense you describe
People like to feel superior. In one era that was “I’m a devout Christian from a good family unlike those other whores and sodomites,” in another it was “I’m a hard working industrialist unlike those lazy, old money playboys,” and now it’s “I’m a social worker dealing with the problems of BIPOC folx, unlike those finance bros that only care about money.”