> but I remember reading something about an aboriginal fire ritual that had been practised by indigenous people in Australia for something like 12000 years

In Australia they're very proud of asserting things like that, but obviously there is no evidence it's true. On the other hand, there's lots of evidence that that doesn't happen.

> Because these traditions were passed down orally or through generational practice they have gradually been lost which is sad.

The fact that this mechanism of loss exists is already sufficient to prove that a tradition can't last 10,000 years.