You are answering "tree is bomb" to someone explaining why over panicking does a disservice to your cause.

Regarding eucalyptus burning: a lot of them burned suddenly after a policy change allowing land to be repurposed after wildfires, I've just been told by locals.

The most common species used does not stand cold and needs a lot of water. This means that they are often restricted to the humid parts of the country near the seashore. They have also owners that seen it as valuable, and regrow as trees, not as a pasture, so unsurprisingly they burn much less than people would expect.

Some very big wildfires with criminally suspicious causes are based on Eucaliptus, but pines and forest regeneration on the low bush state are the worse offenders, as they were actively targeted first by locals and now also by foreigners. Locals hate young bushes of the less flammable species with passion here. They really can't refrain themselves from keep burning it.

Laws that forbid the change of use of land did make a big difference in the past, but are seen as ideological and were revoked by far right politicians. The start of wildfire waves after that move was immediate. This happened a few years ago. One step forward is followed by two steps backward.