The debate about saving the environment and rapid population growth/ immigration are intrinsically linked. You can’t seriously have both.
So how is it possible that groups like GetUp are both running open door immigration campaigns and save the environment campaigns?
You can’t rapidly increase population without the services to support the population. That means further development including roads, buildings, water and power.
Even if you won’t build new dams, you’re going to have to eventually increase water supply. Sure, there’s gray water, but that’s not going to supply all the water you need.
You need desal, and what does desal consume a lot of?
And then you have the contradiction of Australia being anti-nuclear power. Wind and sun doesn’t provide base load electricity, so you’ve got gas and coal left.
I could go on, but you get the idea.