[newrotik]

This is not correct and proves the point made in the parent's comment.

Australia had much more severe bush fires in the 70s [0].

Note that many Australian plants are have evolved to adapt to bush fires, which means they must have been a staple of Australian ecology for many millions of years.

[0] https://en.wikipedia.org/wiki/1974%E2%80%9375_Australian_bus... in 1974, 290m acres burned vs https://en.wikipedia.org/wiki/2019%E2%80%9320_Australian_bus... in 2020 which has a highest estimate of about 86m acres burned.