While Australia has the wrong climate plan, Australia only contributes 1% of the CO2 produced in the world. So even if Australia went carbon free, it would still have the same problems--carbon dioxide circulates throughout the world.
https://en.wikipedia.org/wiki/Greenhouse_gas_emissions_by_Au...
Worlds largest coal exporter, at near 40% of the world's coal, puts Australia as the third highest global export source of CO2. Behind only Saudi and Russia (oil and gas respectively).
I'm not sure it's fair to count a country's fossil fuel exports to its CO2 contributions. Arguably Australia could increase the price of coal by stopping its coal production but the effect would just be that mines elsewhere would reopen or increase production to meet demand.
I'm not sure it's fair to give production and export a free pass in the accounting, as we do.
If coal prices increase it strengthens the case everywhere, for switching to alternative fuels. More solar, wind, hydro schemes will start, and some will replace coal with gas -- which although fossil is, at least, a step in the right direction. Of course mines may reopen, but if the world is ever to be serious about solving the problem that should be restricted, regulated or taxed by the nation with the reopening mines.
While Australia is insignificant on its own. Its per person contribution is far above average. And since slot of people want to live the developed lifestyle like that of Australia the problem is it offers the excuse to being scaled up in other aspiring countries.
Additionally Australia actively dismantles action amongst other countries. Your comment comes off as knowing the pond in the ocean of the problem. It also exports coal on a gigantic scale, read top of the world so other countries do her polluting.
https://www.abc.net.au/news/science/2019-08-19/australia-co2...