It was capable enough to support more than 50,000 US and Australian forces during WW2, with a far smaller local population and industry base.I don’t think anyone here mistook Townsville for Norfolk. By the way, Townsville has history too. And while Townsville is smaller than Norfolk in proportion to the population of the country it is twice as big. Plus since no one is planning on basing a fleet of super carriers there just a couple of LHDs a direct comparison is out of place.
A force many times larger than would be the case today, even if the whole RAN was based there...