@billybongo; you're overlooking several important matters:
1.
Quarantine of travellers into Australia is a federal government responsibility - after claiming he'd closed Australia's borders as of March 21st Morrison kept them open and kicked responsibility for managing the process down the road to states.
2. After imprisoning travellers from China for two weeks on Christmas Island on February 1st,
Morrison left the floodgates open to roughly 400,000 travellers from COVID-19 ravaged USA, UK and Italy in particular. That enabled COVID-19 to gain a foothold throughout Australia by March 21st.
3. As active cases of COVID-19 grew Premiers demanded interventions and
Morrison suggested home isolation for two weeks. Premiers persuaded him that would be disastrous and resolved instead to supervise the quarantine of travellers for two weeks in private hotels.
Morrison then left it to states to manage with Victoria and NSW copping the overwhelming majority of travellers to process.
4. Although NSW Health stuffed up the disembarkation of travelers aboard the COVID-19 ravaged Ruby Princess when
Border Force refused to play its role protecting Australia's borders; it did a great job in managing travellers in hotel quarantine [deploying Police and not trusting the private sector].
5.
Victoria's DHHS stuffed up the supervision of overseas travellers quarantining in private hotels big time, trusting the private sector to fulfill its contracts. Responsible DHHS staff are expected to be held accountable once the Coates Inquiry presents its findings.
6. When reports of problems with private sector management of hotel quarantine on behalf of the Federal Health Department and Border Force emerged
Andrews intervened and terminated the system - telling Morrison Victoria would no longer do his work for him.
7.
As of late July Morrison finally decided to limit the number of travellers coming to Australia to 4,000 per week - more than FOUR months after he declared Australia's border had been closed.
What's happened in Melbourne is an absolute mess and to the credit of no-one. One leader has fronted the media every single day for months to answer questions, Morrison instead went MIA and even banned Border Force personnel from appearing before the inquiry into the Ruby Princess disaster after promising Australians his government would fully co-operate with it.