Look, you’re operating off a caricature of Marx here. I really encourage you to read more Marx, or a summary of his thinking, because it would at least clarify your criticisms of him. Marx said that economics should be understood as a political issue, not that politics makes economics. This is an important distinction, because your understanding is Marx precisely backwards. As @FoolishOwl explained, Marx saw political forms as usually derived from economic ones, although there is feedback between the two. The political nature of economics to Marx was that allocation is not neutral or scientific, but that it reflects the relations of power within society.
I cannot fathom how a system which has lead to outcomes where tens of millions of have people starved to death because it was literally unprofitable to feed them is non-political.
