> What's interesting to me is that reading through this thread, particularly Sartre's description of anti-Semite thinking, is that the exact same thoughts are voiced in the rightist spheres I inhabit, but referring to the left. Particularly regarding discourse and respect (or lack thereof) for it.

Probably because of postmodernism, which is perhaps best interpreted as "defense against the dark arts" for the left. The "disrespect for words" and meaning itself, a hallmark of postmodernism, has its origins in propaganda techniques developed by corporations for marketing purposes, and was weaponized by the right long before it ever got picked up by the left.