These commies believe in the manual labor doctrine. This doctrine states that only manual labor is productive and that the labor of businessmen, capitalists, and the rich is unproductive. And the wage and salary income of manual workers is earned and the profit, dividend, and interest income of capitalists is unearned.Thus, manual workers and members of unions, are the only people responsible for production, and thus, are the rightful recipients of all income. This is an assumption that is the foundation of the abstract conceptual framework that underlies the Marxist exploitation theory.
On this basis, the commies feel that it is justified for the government to seize private property from the rich and redistribute it to the workers who are the ones acutally entitled to it.
Bingo, otherwise known as “The Labor Theory of Value.” According to Marxism, as you described, only labor produces value, so any and all property belongs in the hands of the proletariat, etc., etc.
The fact that so many buy into such insanity is astonishing.