and as a result made “white” Australians feel intimidated.

I'd say it's more if it was said to make German-Australians feel intimidated, rather than all the white ones. My Irish-Scottish grandparents were all in WW2 fighting against the Nazis in some manner. I'd never call a German friend out for Germany's Nazi history as that's not them as a person. Much like I wouldn't call out a Australian-Jewish friend for Israel's (Netanyahu's) actions today. PS: Fuck Netanyahu.