Reddit mentions of Triumph of the Nomads: A History of Aboriginal Australia

You seem to need a grounding in the precolonial history of Australia, while indigenous Australians were not at a technological level equal to colonial settlers they had certainly started moving beyond hunter-gatherer tribes.

The main inhibition to technological development was that they had not experienced a metal revolution, and so were still very much working with stone and wooden tools.

If you can find them in your local library, and actually want to know more, read these books to start: Triumph of the Nomads, Archaeology of the Dreamtime, and The Victorians: Arriving.