I haven't seen the SA/Tasmanian/NT Government carry on like either WA or Qld have...
That is the crux of it, WA and QLD have sprouted some clangers and are treating this like some sort of competition for sporting events, but at the same time, restricting movement of compassionate cases.
Tasmania seems to have a fairly balanced approach with measured closures to vulnerable areas but still accessable. SA has just followed the others and kept quiet, as well as sent Delta into Melbourne and Sydney, so we can't fully forgive them. That's probably why they have stayed quiet.