@JillsJoy Melbourne has a significant Chinese population too, and a fair few of the Japanese restaurants are run by Chinese folks.
When Japanese food was trendiest, I never assumed that a Japanese restaurant had Japanese staff unless I actually heard them speaking Japanese.
Now Korean food is the trendiest, I'm being careful not to assume every Korean restaurant is operated by Koreans.
Having said that, every Korean place I've been to so far *has* been operated by Koreans.