The equivalent would be instead of saying “the only good nazi is a dead nazi” you’re saying “the only good german is a dead german”. Or, alternatively, saying nazi to mean german.

I don’t blame anyone for feeling uncomfortable with countries that have done horrific shit to them in the past, that’s normal and fine. Translating that into a blanket hatred for its current population is not (it isn’t in general, but it’s hard to truly blame someone for just not liking people from a country they’re currently at war with by default, it’s kinda the natural reaction and they probably have other shit to deal with)