A lot of people have managed to develop parasocial relationships with authors and theorists who have been dead for 100 years. Perhaps that is not good.
Like I am sorry but new authors exist, no one should be an authority on a anything, and “what Marx would think about X” is just an exercise in creative writing. Who gives a shit what some dead guy thinks about a think he never saw? What do people now think? What do *you* think?
Also lest anyone think I’m only dunking on Marxists and similar, anarchists absolutely have this problem too with some our big names. While important, I think we overemphasize the hell out of Bakunin, Kropotkin, Malatesta, and Goodman.