Okay, so I have been reading this forum topic with a little bit of interest and amusement. I am not really sure what it is all meant to be about. It is a topic that has started from a Wiki definition - yep, always my Number 1 source of what is correct in the world. Wiki is full of definitions/descriptions that have a "slant" one way or another. Never totally wrong, but it is hardly academic.
Now a YouTube video is meant to explain more? What makes you think that this "Australian" woman has not been in Hong Kong for a large majority of her life? Just because she is white? Listen to her pronunciation - it is not Australian, it is 100% Hong Kong (I am no expert, but even I know when someone has a accent). With a little investigating I am sure you would find the true answer.
Just because it is on the internet, doesn't make it true. (Expelled, anyone?!)
This whole topic has made me ask: "What's All That About?"