Very sad indeed. But a true accident.
I feel as stated above,that a lack of education on ALL electrical in a home is partly at fault.
The system has been there since the 70s',with out incident.age of system may play a role.For the trees,private property,owners responsibility to notify POCO or get trimming done.

Along with fire safety,smoke detectors,safe meeting place and the use of 911. Most if not all families miss this part.

Blame? None,ignorance to the industry and it's standards makes those comments.
Here (Mass) those installs typically run up the rakes to the ridge,SE or conduit.