raging against "managers" is an infantile anarchist or ultraleft program, isn't that Dilbert's whole thing? Managers are fine, it is capitalism that ruins the natural and normal human ecology of business administration.
Communists want to do business, but the mediator class literally spends their time means testing and putting obstacles in the way of workers getting power. Wage theft can open happen in the dark, don't let the woke utopian reformers hide the truth with their attempts to reconcile the contradictions of class society
to my understanding the PMC fights to uphold the class structure because, while they are not at the top, they still get to have power/privilege over a majority of people.
So they work against the interests of the working class to uphold their power, like the knights and nobles of Feudalism
That's not good materialist analysis. Knights and nobles, no matter how low down the pole, were still landed gentry. Their relation to the modes of production in the peasant agricultural economy was as landlords / rentiers.
A closer fit for the PMC (and I broadly agree that the term is bad from a Marxist perspective) would be the seneschals or majors-domo of the nobility. Basically elevated and usually better educated (often hereditary) servants of the nobility tasked with carrying out the day-to-day economic activities of the estate.