Leaving aside the fact the he declared war on us, Poland didn't become Communist because we liberated France. There's no connection between the two, and we can clearly call WWII a victory. We liberated Western Europe, which is better than liberating nothing, despite the fact that Stalin stayed in power. Unfortunately Poland was screwed either way, though at least the avoided complete dismemberment and were able to emerge at the end of the cold war, something that wouldn't have happened under either of the 1939-1940 models. I suspect Pat's opinion is based on the idea that liberating Western Europe Hitler isn't necessarily a good thing. The idea that Hitler wouldn't have turned on France and England when the time was right, which underlies Pat's theory, is dubious. Are we in the wrong in Iraq because we're not liberating Iran? Wrong in South Korea by leaving North Korea alone?
Gosh, I hope Iran is next! ...(sigh)...