[fintstone]

The size of some of the fires are definitely the result of drought, heat, wind, and overgrowth which are all predictable and conditions that happen every few years in the west (As does lightning)...and will continue to do so. Why not assume that and do necessary work to prevent them from getting out of hand? Similarly, repair the energy grid and maintain it. Also, purchase and maintain firefighting equipment and hire/train personnel to operate it.

As far as cause, they have caught people setting some of these fires red-handed...so it is likely that some of these were also set and did not happen to be caught. Ignoring intentional destruction simply encourages it.