It's politically convenient to blame PG&E for what happened in Paradise. But I would not say it's 100% on them; I've been to Paradise before the fire, and it was impressively beautiful being surrounded by all the trees and nature, like living in a forest. But even back then, I remember thinking it was a massive tinder box that could go up in flames. For reference, here is a picture of an average street in a relatively urban part of Paradise, before the fire [1]. The houses farther away from the main street had even more foliage. The area is mostly older retirees, who didn't have the energy/will to trim back the growing unburnt fuel on their (massive plots of) land. For argument's sake, it'd be like surrounding your house with barrels of gasoline, then putting the blame 100% at PG&E for starting the spark. In fairness part of the blame is on the property owners, or perhaps the local gov't for not taking fire safety measures to limit the spread or damage.
[1] https://maps.app.goo.gl/E83WWnYX2pDjXzxY8