Perhaps because I'm not living in the USA and I'm not part of its culture, but to me it seems that there is a very big over sensitivity to anything politically incorrect.
It seems to center around virtue signaling. Those who participate the most seem to be indirectly involved and locked in an arms race to see who can be more indignant on behalf of those who might possibly take offense, when and if they exist.
Its a bit insidious because usually there is some merit to the complaint (as in this case, the variable name was a bit embarrassing and should have been changed with little more than a self-conscious chuckle) but thanks to the cult of PC, everyone over-reacts.
Virtue signaling persists only because too few of us are willing to speak out against it. The good news is that I've noticed an increasing amount of opposition to political correctness culture in the FOSS world. We're fighting back, and we're winning, albeit slowly.