Yes, the grandparent was implying games didn't make good propaganda because the flaws in their model are exposed by playing with it, as if propaganda needs to b

Yes, the grandparent was implying games didn't make good propaganda because the flaws in their model are exposed by playing with it, as if propaganda needs to be dishonest or false, but it doesn't. Following their reasoning, and your example, games could be effective propaganda tools for a specific category of ideas; those that have the self consistency needed to be made into a compelling game.