Well this had been stated at the start of the tour itself that there won't be any hotel quarantine after first 14 day quarantine on arrival in Australia. This hotel quarantine came out of nowhere!!

And this opposition hasn't come after that restaurant episode there were discussions going on same issue two days before that incident as stated by few Australian journalists. One has to feel for players they're coming here straight from hard IPL bubble.

They quarantined themselves in their respective hometowns even before going into the IPL bubble. BCCI requested Cricket Australia to reduce their quarantine days on arrival in Australia as the players were coming straight out of one bio bubble but Cricket Australia denied.

So the players again hotel quarantined themselves in Dubai for 14 days after IPL got over and arrived in Australia and again quarantined themselves for another 14 days.And after all this they were allowed to behave like normal Australian barring some restrictions.
#AUSvIND

And here comes this additional hotel quarantine before last test!! Why cricket Australia can't just swapped the venues between 3rd and 4th test!! I'm sure they knew about this quarantine.

Not wanting to spend another 2 weeks in hotel quarantine when you can easily just play it at another ground.Fair.If you're saying that India just don't want to play in gabba,then simply cancel the test in Sydney and host next test matches in GabbaSo there won't be any quarantine!