How do you know this is arson?
When the amount of wildfires is at this level, the idea that they were all created by divine lightning isn’t plausible. Somebody is up to something, and instead of investigating the source of these ‘wildfires’, authorities appear content to blame it on global warming.
Interesting fact though… Before the later part of the 20th century, nobody fought wildfires or forest fires. They didn’t have water bombers or helicopters for dropping crews in to fight them. They just let them burn out naturally, which they always do.