It's entirely likely that Australia's Covid rates had nothing to do with any particular action they took. Every Covid success story had exactly one thing in common: they're all in the same area of the globe, on the other side of the planet from Europe (where all the major outbreaks after Wuhan seem to have come from). It's about the only thing they had in common; there were vast differences in culture, political system, measures taken, and so on. Also, the main thing which seemed to determine whether a country or region was known for their "immediate knee jerk reactions" or their "inability to follow lock down procedures" was whether Covid remained under control or not, rather than the actual specific actions they took...