I doubt these tests means anything, Autralian companies use standard tests way less than US companies, there is no reason for Australian devs to just be good at these spontaneoysly.
Born and bred Australian here. In my ~10 year career I've never worked with nor worked for anyone who didn't advocate for (close to) complete code coverage.
Can I ask where you've learned this?
I'm not taking about that kind of test, I'm talking about coding tests for interview. Majority of mine has been either light pairing or take home, not the "standard" leetcode type.