It would be evidence of climate change if Australia was no longer getting hit with droughts that induce wildfire conditions. We've got records of those going back to colonial times and fossil evidence going back thousands of years.

Minor increases in temperature do not cause wildfire conditions. Drought, wind, fuel, and a catalyst (like an arsonist or clumsy person or lightning) are all you need for fires.

Until we start controlling the rain and playing God in the sky, I doubt we're going to be able to prevent Australia from developing dry conditions from time to time.