"Critical theorists" are the people who fetishize "critical thinking" and all it got them was to embrace cultural Marxism.
Constructive thinking is far better than learning how to shit on people, as the skill of critique teaches us...
What do I believe? Why do I believe that? Why do I feel that evidence supports that belief, but not this one? For example, I can explain in a fair bit of detail why I believe that the Apollo landing was not faked. I wouldn't normally bother to explain those reasons, but all of them are based on beliefs and evidence that I've read about, and most of those beliefs are subject to reversal should counter-evidence surface.
In other words, when I read something and hear myself think, "oh yeah, that sounds right", there is another part of my mind that thinks, "maybe not".
Critical thinking is precisely what could have spared us from all of that 'cultural marxism' you mentioned, or at least, to do it in a way that is... constructive.