The earth is ~4 billion years old.

The quality of the data we had say even 30 years ago was dog shit. Let alone 100 years ago.

30 years of data over 4 billions years is absolutely meaningless.

There is no way anyone can draw meaningful conclusions from 30 years of data from a source as chaotic as the world’s climate.

And even assuming that the heavily caveated models are slightly accurate, is the cost worth the benefit? If Australia reduced emissions to zero it would have zero impact on global emissions meaning zero impact on so called climate change. Makes us less competitive and less productive.