But if your fight against the nazis will only waste your energy and have no discernible effect on their cause, what good is it?

That’s not the starting point in the argument we’re dealing with because that is not the reality of the situation. And if your counter argument is against propaganda, then dishing out a bunch of propaganda about how the winning side is losing, then I dare say the first thing you need to deal with is how you’re drowning in hypocrisy.