Agree...and this assumes Stalin and the USSR would sit buy while Germany sent its men abroad. NO WAY, even in peace, would Hitler have left his right flank wide open to Communism.
Hitler DID leave his right flank open to communism - when he invaded Poland together with the Soviets from the east. Stalin would have happily sat by for as long as possible without fighting Germany; each consented to the others’ invasion of neighboring free states without interfering. Hitler took much of western Europe while Stalin took the Baltic states, and parts of Poland and Finland.
Stalin was a de facto partner in Hitler’s evil up until he attacked them in June 1941 - and after that, Stalin wouldn’t fight Japan while those animals went on a tear (killing many Americans and Brits in the process).