Isn't part of the usual argument of why Real-Communism's never been tried that Communist Nations have hard times doing trading due to Non-Communist Powers pulling strings and/or refusing to trade with said Communist Nations and maybe even being at war with them or keeping others from becoming Communist?
I am sure those idiots say a lot of things. Though, I think I have heard such insane ramblings to that effect.
Though, going to point out that canonically the Soviet Union had reached detente with the USA in the timeline given their diplomats or some of them were allowed into the Vault. And given that, I am inclined to believe that the war wasn't ideological and ideology was just used to propagandize people for the war effort on both sides. Rather, I am pretty sure it is entirely based on control over the Earth's dwindling resources, and this is entirely supported by canon.