Speaking of Asian people down under, when I was 19 I moved away from the USA to study in Australia. I had only really ever heard Asian people speak with an American accent, or accent from whatever country they may or may not have been from. I had a seminar class and this stereotypical skinny, glasses wearing, nerdy kind of East Asian dude raised his hand to speak. Turned out he had one of the thickest Aussie accents I'd ever heard up to that point, it shook me to my very core. I'll never forget that day, the day I learned that Asians can be heaps Aussie.
I guess that's my story of treating Asians as perpetual foreigners, as a white dude. But it never shocked me to hear Asians with any sort of American accent prior to that and I don't think I ever treated Asians as outsiders in the USA, so I should have understood that ya'll can assimilate
in other countries as well.