It's true that in some Chinese cultures cheating the system is how things are done, but this doesn't apply to other Asian cultures. Japanese people for example are very respectful of others and culturally are much less likely to bend the rules when compared to natural born Australians, so you can't really lump them all into one bucket as there are huge differences between them.
Very few Asians are refugees. A refugee is someone who escapes their homeland because their life is in danger, and is allowed to settle in a new country without meeting the normal requirements for citizenship. International students paying for a plane ticket and going back home a few years later when they're finished studying don't even come close to the definition of refugee. Have you gone through a university campus carpark recently? There are so many Asian students driving BMWs and other expensive cars because their families are rich, and that's why they are able to study abroad. Why would they want to live here when back home their family is powerful and politically connected?
While they are here they pay GST and other taxes just like everyone else. Again, just look at COVID when the annual influx of international students stopped - companies went bust and white Australians lost their jobs because there weren't enough people coming into the country and buying their stuff.
True refugees may well be a drain on society while they get back on their feet, but Asians sure don't count in that. I'd be interested to know where you got the stats showing how many refugees are Asian? I can't find any stats on refugees, only on which countries migrants come from and that says this year the most came from India, followed by China, New Zealand and the UK.
What other cultures would you prefer on our streets instead of Asians? I guess you'd rather we change the law to allow burqas and mandate all food be halal as per Islamic law, so we can get more Muslims in to replace all the Asians? No thanks, I like the fact that whatever country Asian people are from, they are happy to follow the laws we have and not try to change them.
The AirBnB is already "taxed" when it's empty because the owner still has to pay rates, loan interest, body corp, etc. so they are already losing money if nobody is there. They would appear to be popular enough that that 'tax' is still a better deal than putting the place up for long term rent.
With the recent rule changes limiting rent increases but interest rates still so high, a short term rental is now probably more attractive to a property owner than a long term rental as far as covering the costs of owning the property.
If you want fewer AirBnBs and more rentals available, make it more attractive for property owners to provide long term rents, don't put them all off like they are doing now by making it such a hassle to make a place available for rent.