Comment by prawn
This always amazes me when visiting the US. I'm from a dry part of Australia where bushfires are a regular summer threat, but the smoke seems to dissipate quite quickly. In the US, I've driven more than once for a week across areas where the sky is thick from smoke coming from a fire 1-2 states away. And it's a fire that started weeks prior.
It struck me last trip that an adversary so inclined could really sap lives, morale and resources from huge areas of the country by having rogue individuals secretly starting fires on top of regular lightning and firebug sources.
The news is wise enough not to make a huge deal of it, but a non-trivial number of the last bunch of fires were determined to be arson. It's hardly even a stretch to imagine that the arsonists might not have been just random folk who thought it'd be really cool to start a fire.
Then again, when a casual arsonist can set significant fractions of a state or even country on fire, and there's millions of people living in the area, and when "pyromania" is sufficiently common enough that it's got it's own entry in the DSM [1] (with estimated incidence at 1.13% (!)), it probably counts as an unnecessary complication to the explanation. There's no way 1.13% of "millions of people" can be stopped. The only solution is to not let the powder keg be created in the first place.
[1]: https://www.theravive.com/therapedia/pyromania-dsm--5-312.33...