The difficulty people have in understanding that these fires are inevitable is why they won't stop anytime soon. People will die because of our collective inability to accept the ecology of the region.
It's more like there's a crowded place with a gun pointed at the middle of the crowd. Every 30m the gun is cocked. 1-10m after that based on a random timer, it fires.
If someone trips and accidentally pulls the trigger after 32m in are they liable? Maybe, but only in the smallest way. The actual problem is the gun or the people walking in front of it.
It's wrong to use the word "may" for these fires. These areas have evolved to burn and will do so unless we shrink wrap each plant.
Humans put the gun there, we started burning which gave rise to an ecosystem that thrived on burning and encouraged more. Then, we settled that area en masse.