Regardless of how reasonable things seem at the moment, when it comes down to it I trust the Australian authorities and healthcare system in a way that I just don't for the US.
If you have symptomatic CV and you go to a hospital waiting room to be tested, you have done a bad thing.
Except that if you read the ABC article, Australia only tests people who both have symptoms consistent with the disease AND either have travelled to an affected country or had contact with a confirmed case. Also, the US press has managed to convince a large (or at least vocal) chunk of the American public that if they can't get a Covid-19 test based on their cold-like symptoms it's somehow proof their healthcare system is falling behind the rest of the world in testing as part of a Trump cover-up, and it's leaking to the rest of the English speaking world. It's all over social media.
I think this just points to the ease of being tested if you are Tom Hanks.
Community forums are full others reporting similar stories
https://apple.news/ASvoRONOWS9ijWX4RrGmiTQ
“Currently we are not testing everyone, and whilst this may change in the future, at the moment this isn’t feasible. The pressure on labs would be mammoth and the yield is likely low,”