Correct, part of the problem (and PUC)
the lines are not the issue in a dry wind event, it is stuff hitting those lines. ie trees and branches
yes they do. and they get worse every year.
at midnight last night the humidity was lower than the Sahara Desert at mid-day. single digits at my place
add wind, and nothing good will happen with any kind of spark
I am no fan of PG&E by any means. what they charge for power is the biggest gripe I have.
but if I can be held liable for fire cause by conditions I cannot control, I would shut the power down as well.
they have looked at burying the lines here locally (currently not feasible)
and just this last month, they have started a program to inventory EVERY tree that if it fell is within striking distance of the power line.
on my property alone about 100 trees were measured and recorded. (2 were determined to be current hazards and marked for removal/ trimming)