For the record, I’ve been following this since the beginning.
As a USAnian, my jaw dropped when I first watched the video (which I did before reading any of the thread). That commercial would absolutely be completely and totally outrageous here. (Well, I did love the Dave Chappelle image - he would do that and it would be outrageously funny. It’s a weird place, here, sometimes.)
Then I read the thread (one page at that point), had no problems following the Aussie points, and quickly came to the understanding that in the Oz cultural context, this advert wasn’t a problem. I never did bother to watch the Young Turks commentary, as they were just idjits.
I’ve been following the thread since, alternately giggling and eye-rolling at certain posters.
I’m currently having the same argument with some friends of mine (my fault, I provoked it) who, due to their job environment, are extremely sensitive to racial issues. We’ll see how that goes. 
By the way, much thanks for the “wine cask” analogy. That helped make something click for me.
The parallel in the Americas to the Aboriginal situation in Australia is NOT blacks. It is the native tribes (American Indians/Native Americans/First People/etc.), who were force-assimilated (including having children “kidnapped” off to boarding schools) as well as various other nastinesses, and who have similar problems today, including rampant alcoholism.
The only reason Americans associate Aboriginals with African-Americans is because of somewhat similar skin tones, facial features, and hair textures. It’s a Yank thing. I have hopes that someday we may mostly get over it.
At any rate, thanks all for the very informative cross-cultural discussion. Some ignorance has been dispelled, at least!