A made up term by some champaigne socialist who repackaged gramsci's "cultural hegemony" for western college students.
I randomly decided to read some of these beginner marxism books a year or so ago, and mark fisher's books were the absolute worst. It's the focus and obsession of culture, art, over materialist analyses of history and imperialism, that's so appealing to westerners.
I knew Jonás Ceika promoted that book so it should have been a red flag. I think it was one of the first socialist books I heard about via this post: Answer to Why do people believe in capitalism? by Connie Commie Honestly, I was convinced by the dude who was on revleft for dialectics that some “postmodernism” isn’t worthless, but there are much more important things to study than cultural critique.
I thought it was OK if you are already equipped to parse through the bullshit (e.g. reading it critically).
The best thing I would say about it is it is relatively concisely written for such a heady topic, and I appreciated the anecdotes regarding skyrocketing mental illness in British schools. It helped descramble my brain a little bit when I read it.
I recommend Gramsci a million times over, though. Fisher's breakdown is a mere toe in the water in comparison.