The specific challenges you outlined are certainly concerning. The impacts of climate change, such as heatwaves, droughts, floods, and rising sea levels, are already being felt in Australia, and they are only going to get worse. These extreme weather events will have a devastating impact on the country's infrastructure, economy, and population.
As you mentioned, the housing crisis in Australia is another major concern. The lack of affordable housing will only be exacerbated by the influx of climate refugees from other countries. This will put a strain on already stretched resources and lead to social unrest.
Yeah, the housing crisis is really bad... obviously more apartments and houses need to be built but that's a process that takes years. Australia also has a lot of immigration, which is awesome, and helps improve Australia's economy, but exacerbates the housing issues. So many Aussie building companies went bankrupt during the pandemic because materials just rose in price so quickly. It's really tough.