FWIW, I don't think that daurousseau said that the USSR was never a threat to anyone, ever, either.
Quite right. Trotsky, for example, interpreted an ice axe in his skull as a threat. And the Soviet citizenry as well as that of Eastern Europe found their rulers to be a threat--still do, under post-Soviet capitalism.
However, the U.S. did nothing whatsoever to help. By posing the false dichotomy: "our way or Stalin's way," they have disarmed the very people who could have and would have abandoned Stalinism for some form of economic and political democracy.
The "communist threat" and "capitalist imperialism" are brother bogeymen under the skin: neither has any use for democracy. (I call them boeymen here to underline what we were talking about previously--that they were never much of a threat
to each other. Just to us.