Earlier quoted context omitted.
I just did a quick look, searching (without quotes) "Australia permission to leave" on DDG. It looks to me like you're conflating emergency restrictions for COVID [0] with something like the exit visas that the former USSR used and Russia still uses. There are a great many people dying in the US at this very moment who were making this same sort of argument, right up until they caught COVID and ended up on ventilator…
> Russia still uses No it does not. I'm Russian, and the only thing you need to leave the country is an international passport. You can apply for one online, then come to the immigration service to have your picture taken, then a month later you come again and collect it. The passport is valid for 10 years. I believe it's fairly similar to the process most other countries use. Many other countries require Russian cit…
https://ru.usembassy.gov/u-s-citizen-services/russian-visas/