We have to be clear about the fact that this was not merely a "tragic accident" it was a crime. This was mass murder by the settler state on a colonized people. The neglectful policies of the colonial government of Hawaii compounded on the effects of climate change which the US is doing everything it can to accelerate and which they know will disproportionately affect indigenous populations and poor people.
It could and should still have had an emergency contingency plan. The neglect is deliberate. There have been many natural disasters that resemble this. Hurricane Katrina comes to mind. The neglect was a form of deliberate cruelty at that time, as well.
Whether or not the fire was set by someone or started "naturally" the blame still lies on those who created the conditions in which it could get this out of control and result in so many victims. If you allow an entire island to turn into a tinderbox and on top of that fail to prepare an adequate response then you are responsible for the fire and the destruction it causes, regardless of where the first spark came from. The people who have the most blood on their hands in this incident are those who sit thousands of miles away in their offices and make policies or run companies which continue to contribute to global warming.