The actual right wingers would either be full alt-right, spewing lies about Dresden and the clean Wehrmacht

Respectfully disagree here. Fash are not at all above cynically appropriating liberal or even socialist talking points and values if it suits their purpose at the moment. Why do you think they love to talk about "muh frozen peaches!!" so much? Why else did they say that they are a worker's party?

And seeing how there’s no “the nazis really deserved it tho”-clause for this case, the entire situation gets reduced to two spherical actors in a vacuum doing things and thus, war crimes against nazis makes you the real nazi.

This I agree with.