Actually yes, I do consider the horrific, mass atrocities committed by Marxists in the name of Marxism to be relevant to the credibility of Marxism in just the same way that I consider similar consequences when Nazis came to power to discredit their political theories. And, you make a good point about additional fields of Marxist influence: Marxist agriculture's contribution to the food supply, Marxist industry's contribution to national productivity, Marxist political officers on staff at State newspapers and their contribution to journalism, AND literary criticism and gender studies' contribution to academics and free speech on campus.

Marxism has influenced so many fields wherever it has gone, and if you like what it has done to these fields, it's reasonable to assume that it could have a similar impact on paid employment arrangements.

For me, though, that's not an encouraging thought. I've seen enough of the destruction that results when Marxist theory is applied to real people to conclude that whatever the problems with paid employment, good answers will not come from Marxism.