I have seen no evidence of this. In fact, things have improved over the last few years. If anything, stupid environmental rules remain the biggest problem governing tree trimming.
About that I could go on at length.
I am not in PG&E's Service Territory, so you could be correct. PG&E was in bankruptcy. If it was not deferring maintenance, I am amazed. I know several Pacific Northwest utilities that are deferring wood power pole replacements and tree triming that would suffer a really huge problem after a major storm. These utilities have cost problems but are no where near bankruptcy. I was speculationg based, but if I am wrong, I apologize.
I tip my hat to the enlightened management of PG&E for their continued maitenance if they that is what happened.