I had a copy of Professor MacDonald’s The Culture of Critique, but unfortunately the rats ate much of it, as I stored my books in the leaky carport of my Russian neighbour, which is a home for most of the rodents of Melbourne. But he says the eating of rats is good, compared to what he had to eat in Russia during the USSR period. So, I can’t check the book, and did not find a pirated copy on the internet, which I would never use anyway, being a believer in the sacredness of private property, any departure of which would be communist, but I seem to recall that Kev pinned the blame upon the Frankfurt School, which on first reading put me off frankfurts, which I did like, boiled up. Anyway, to focus, there is a case that the problem is with Marxism in general, and the entire Leftist Weltanschauung, points also made in another blog post, overlapping with this one.
https://hannenabintuherland.com/europa/the-neo-marxist-culture-war-takeover-of-western-philosophy/