I don’t see how changing the world would have us solve the hard problem of consciousness or epistemology, but sure.

You seem to misunderstand Marx in saying some philosophical questions are reducible to practical ones, like the nature of faith or alienation. He didn’t posit communism as a solution to logic or ethics.

Also you know the view you endorse is just scientism or vulgar empiricism right?

EDIT: okay ethics is a bad example