What is this Cold War obsession with misrepresenting Marxism in as many ways as possible just to make it seem ridiculous (or evil)?
You seem to have demonstrated that contradiction in whitewashing Marx. You over-simplify by focusing on Marx's economic theories* while ignoring the terrible evil that he advocated.
Marx is the father of modern political genocide. (5:18-7:40)
...the Marxist progression of history is based on an increasing voluntary desire to do labour - from socialism through to communism
I expect after seeing political genocide in its various flavors that "voluntary" labor isn't too hard to get. That was certainly Stalin's experience.
* And those certainly aren't without their issues.