This is obviously not climate change. Many of these fires spawned miles a part, around the same time, in cool weather conditions (60F-70F). 

California has an estimated 39 million people. Of that figure, it has millions of illegals, millions of poor people, hundreds of thousands of homeless people, criminals, crazies, etc. 

How many arsonists did it take to cause the devastation we've already witnessed? It's probably a few dozen at most. What's to stop sophisticated criminals from doing this if they can just drive the rich people out by starting fires and then loot the houses on scooters before moving on to a new area? 

Police, firefighters, EMTs are all overwhelmed. CA has some of the strictest gun laws in the country, so almost none of these rich or middle-class Californians with property out there have the means to defend themselves, their family, or their property from armed criminals. Shit is going to get way worse before it stabilizes, and even then, it's possible that tens of thousands of people will be permanently displaced before it's over.