Sure, it was a lack of maintenance that actually caused that fire. But that fact shouldn't resolve all others from any responsibility by putting the blame for what happened solely on PG&E. Many other things could have caused that fire.
There seems to be a very lacking plan to protect many of the foothill communities in CA from forest fires. People want their housing with woodlands surrounding them, safety be damn. But, that is the same as many, many other communities in other areas. And it doesn't apply to just housing in woodlands either. Should quit making any kind of insurance available for housing in hazardous locations and it would stop much of this neglect. It really should piss off anyone who has a house not in a natural disaster location that their insurance payments are supporting housing in such locations.
As for PG&E, that's what happens when utilities are turned into for profit stock market traded operations. Same thing is happening in many other areas in North America.