Some punters are idiots, however.
I lack an Australian accent, having washed up here after my formative years, which were spent everywhere else. Last week the cabin crew took great delight in showing me the Net Promoter comments from one of our J class twarts*, in which she lamented flying on Qantas, yet with a "non-Australian" pilot.
Some people are just misanthropic and/or jingoistic idiots, and their opinions reflect their narrow, outdated world view. It has been my experience that race, gender and citizenship have all been very poor predictors of anything.
*twart: the "R" is silent.