If that is the case why is every state and territory doing things differently? The variation is politics, pure and simple.
There is a lot of variation on the verbal advice given in interviews by the State CMOs.
Australia's failing is that the State Premiers want to keep their own little empires instead of handing all of the CMO's responsibilities to the Federal COM so we could have a country wide policy.
In Qld, at present, the CMO has more authority than the Premier.