re: "Western Civilization" has demonstrated its superiority in many areas

In that sense we do agree. I find it extremely weird people use frameworks developed by philosophers responding to either historical problems or ones developed in responses to linguistic issues, all of which occurred because they were allowed to be free-thinkers in a Western society, as a way of attacking that society. Fundamentally, those attacks, as we know, aren't in good faith, which reveals their true intentions.

That's the essential problem. If anyone reads Adorno, Derrida, Marcuse, or whoever is included in these "Cultural Marxists," their arguments are in good faith, in response to problems they see. One could argue that they are mistaken, wrong, myopic, but I don't see how you could take an argument about a specific thing, apply it to a larger thing, and then write of the entire group because of it. They are doing literally the same thing that they accuse racists of doing.