Yes but that's not the point. The point is that the next person to be
crowned *will* be Australia's monarch even if a later referendum turns
Australia into a Republic. And that is because the mechanics of setting up
a referendum and holding it are slow and Farm has already said that there is
a reluctance to become a Republic while the present Queen is still monarch.
King Charles III will be King of Australia unless Australia holds another
referendum which votes differently to the previous one.

It's been suggested that he won't be Charles III, because of
unfortunate precedents. George VII might be more likely. As he is
'Charles Philip Arthur George' any of these could be used. Too much
Armada about Philip and as for 'Arthur' we'd have no end of Camelot
and Round Table nonsense.