“The Communist Manifesto by Marx and Engels, however, explicitly states that communism will end all private properties and also that people don’t know their own good and must be forced to live in Communist societies. Even if they don’t want to, because they don’t know their own best interest”
Marx was a historical determinist. He thought that the workers would rise up and overtake their masters as an inevitability, regardless of what intellectual communists or bourgeoisie or anyone else had to say about it, because of the pattens he detected in his study of power relationships in history. That fact that he thought it would be a good thing is by the by in his analysis iyswim.
Obviously it hasn’t worked out that way very often ever, because some power crazed posh nutter always takes over.