I know a lot of people have been saying "why didn't they come home sooner" or "who are these people" about the overseas Australians. Here are a few examples from my immediate circle:
1. a friend's son in the UK working as a chef. Visa expiry end of July 2020. He had a flat and a job and knowing his visa would expire, he had arrangements in place for return in late June. When the virus hit in March, his employer kept them working until the full lock down, his land lord would not refund anything on the last couple of months on the flat and, despite a lot of effort, he could not get another flight at a price he could afford to come home earlier. His airline would not refund his pre-booked cheap ticket bought in December 2019, as they had not cancelled the flight. In the end, it was just easier for him to let things take their course and come home as planned in late June. He's home and out of quarantine and well - but good luck getting a job as a chef here in Australia right now.
2. Another friend's son, dual UK/Aus citizen, but raised in Australia, living in the UK with his Aus girlfriend for the past 3 years. Both work as accountants and so have been working from home and not really affected by the lockdown too badly. Her Visa expires in October. They had applied for a partner visa for her to stay. This has now been declined (I don't know why - they are a genuine couple and have been for years, so maybe it is somehting to do with changed rules for virus, I just don;t know), so they now unexpectedly have to either both come home, or just she comes home and he stays and they are separated for who knows how long.
3. A distant relative got the under 30s visa to work in Canada. He left here last November (at the last possible moment to take up the visa) and had a job in the ski season at a Canadian resort. Once the virus hit, he was one of the lucky ones to be retained and he kept working until season end in late April. Things didn't seem too bad at that point, and he had a 2 year visa, so he planned to stay on and live from money earned during his winter season. But as time has passed and the virus has impacted, he has been unable to get any work, has been unable to travel, and decided to throw it in and come home. He is still in quarantine. yes maybe he could have made that decision earlier, but it is hard to put an old head on young shoulders, and sometimes it's a bit of boiling frog. And good luck getting a job in Australia right now.
4. My nephew is currently in Canada on the same sort of visa. However, he left earlier, has a house and a job in the mining industry and has decided to wait it out in Canada. At some point, his visa will expire and he will need to return home. He'll probably be right for a job - mining engineers seem to be still in demand, although who knows with China.
5. My son lives and works as a lawyer in Dubai. His visa there is fully dependent on his employment. If he loses employment, he must leave the country within 30 days. For the moment, he is "securely" employed by a large global law firm, but this may not always be the case. In that even, he will be forced to come home as he will not be able to stay without a visa. And good luck getting a job as a lawyer in Australia right now.
6. Another distant relative is a nurse who was working in the UK. By comparison, she raced home in March, at high cost, before quarantine was imposed. However, despite being a fully qualified and experienced registered nurse, she has struggled to get work. She relocated from Qld to Syd on a job offer at a big Sydney hospital in late March. That offer was rescinded when the lockdown cancelled non-essential surgery, and she has been unemployed ever since - yes really, so she relocated back to Qld to live cheaply with family. However, she finally has a new job, also in Sydney, starting in a week or two.
So whilst I understand the angst people are expressing about "tourists", most Australians who are still overseas now are not tourists, and have reasons for that, and it is not always just a "choice" to return home.