As a 60 year old Australian that's heard pretty much every insult thrown at Aboriginals I'd say that's more of a recent "some cities" kind of thing.
Aboriginal players of Aussie Rules football had to put up with a lot of abuse from some few members of the crowd making monkey noises and shouting "ape man" and stuff along those lines .. I'm guessing the "ooga booga" comes from idiots chanting that from the cheap seats.
Adam Goodes coped the worst of it for calling them out.