Isn't a lot of this the government insisting that PG&E act as the de facto California wildfire insurance provider and collect the premiums out of everyone's electric bill?
You have wildfires caused by, basically, climate change causing there to be an abundance of fuel (dead wood) waiting for any spark, exacerbated by decades of the government putting out every wildfire when in the natural environment the last fire would have cleared out the dead wood before the next one, causing fuel to accumulate even more.
At that point it doesn't matter what the ignition source is, that much fuel is going to burn, soon. If it isn't some piece of PG&E equipment it will be a lightning strike or something else. But if you can pin it on the power company because a tree caught fire from falling on a power line then the fire insurance companies can sue the power company instead of filing for bankruptcy, and then all you have to do is pass on the cost to ordinary people as $500/month electric bills.