You ever been on Centrelink? It's heaps fucked aye.
They cancel you all the time and fuck around with your livelyhood while you try waiting on the phone for hours to speak to someone, the 'jobseeker' program is a fleece to put money into the pockets of agencies who never actually help one bit, etc. It's a system designed to not support people long term, or at all really.
And that's with having stable accommodation, imagine how much harder it all is on top of that while being homeless.