To be fair, I live in rural Quebec, and none of rhe power lines are buried. Yet these power lines travel through woods, forests, and?
The vegetation is kept pruned.
Meanwhile, even with Hydro Quebec performing normal maintenance (unlike PG&E), we have the lowest power rates in Canada nad the US. And that's with a far more rural population, compared to SV, which means a lot more pruning per customer served.
The problem is PG&E, not that the lines aren't buried.