What does that mean, exactly?

How many people alive today truly remember what it was like during WW2?

I would argue that Germany's invasion of the Soviet Union is actually what did them in, not the US invasion

You really think that the USSR of the early 1940s could have fought that era's Germany and Japan at once?

What about the comments by no less than Admiral Zhukov himself acknowledging that in his view, the USSR couldn't have defeated Germany without US assistance?

It wasn't about pure fighting ability. Germany overextended their supply by moving into the USSR which weakened them

But this is all beside the point of extreme nationalism being a bad thing