Earlier quoted context omitted.
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X is enabled by Y does not preclude X being enabled by Z. That's only when its an if and only if, but that isn't the case here. Capitalism and Soviet Communism are neither the only alternative social structures, nor some kind of logical negations of each other. tl;dr would be: logical fallacy!
I don't know why I'm being treated like this for posting an obvious truth. Both capitalism and communism have both been root causes for environmental disasters. The question posed is not some clever rebuttal to blaming capitalism, but a simple mistake of reasoning. I guess I'm sorry to have been the one to point it out.