"I can confidently say I've not heard a single left-wing activist talk about any of those 4 areas in my time working at that organisation, or, truly, in any other activist context."

I've mostly heard these things discussed on Reddit and YouTube because of Jordan Peterson. I've heard postmodernism discussed by a professional counseller but nobody else I've ever talked to. I find it intriguing the intensity which people fight beliefs that seemingly few people believe or have even heard of.

I do find epistemology a very interesting subject in the modern day though. I've heard arguments in Canada about how traditional native forms of knowledge should be acknowledged to be as legitimate as science. People aren't proposing this merely as a thought experiment they want things like oral tradition to hold weight in the court system. They feel that a lack of scientific evidence about possible harms from say natural resource development is being used as grounds to harm the ecology of areas in spite of the warnings and precautions of oral traditions. Epistemology is becoming very relevant politically here in these parts yet it seems to be a subject that both myself and the public at large is uneducated about.