If it looks like a duck, swims like a duck, and quacks like a duck, then it probably is a duck. If Europe supports Soviet Union economically, diplomatically, scientifically, culturally, and militarily, then they saw the benefit of it's existence.
They didn't support the “white movement”, they supported the continuation of the civil war for as long as possible even if it meant supporting the reds.
That's American things, not European. Until 1945 US was a diplomatic pariah, so American position on communism at that time is as important as Argentinian or Brazilian. After 1945 Europeans didn't have to worry about Soviet Union, because Americans kept their army in Europe.
You for some treason think that Europeans are shahids willing to die for some holy book, but it was mostly non-europeans who died for European ideologies, while the Europeans reaped all the benefits.