If you get a lot of rain for one or two years, then a drought, you know that the conditions are there for a highly destructive fire. Under those circumstances, isn't it even more imperative to make sure to take action to reduce or eliminate the risk? "Oh well... nature" is not an attitude that someone responsible for the safety of thousands (or millions) has the luxury of adopting.
I think it's too early to know for sure what the causes are, but if it turns out that there was too much growth that created conditions for a catastrophe like this one, then steps should have been taken. No excuses. It would have cost a lot less than the (potentially) hundreds of billions that will be required to fix it now, as well as the loss of life and the loss of property and the long-term effects that victims and their families will be dealing with.