A 15th century Catholic could debate how many angels could dance on the head of a pin, but not whether Jupiter had moons. Diversity within a walled garden does not remove the walls, and as long as narratives are not in active conflict with the bounds set by the larger state they are tolerated.
Refusal to condemn entire movements for specific actions becomes approval of the specific actions
If you do not condemn a specific genocide and the specific system that produced it, then you approve of genocide. As long as ML communities systematically support those that approve of genocide and genocidal regimes and condemn those that condemn genocide, ML approves genocide.
Wild! So when Mao said
I don't think Mao said to create a stock market, chief. Why do you think a stock market where legal entities that can hold capital can trade partial ownership in corporations that own the means of production while employing workers who have no representation within this system (except as petit bourgeois owners of small amounts of capital savings) could reasonably be considered communist?