This is super annoying, but to blast it as a California problem is short sighted. Reid Hillview, along with other urban airports nation-wide, have been threatened by development and other issues for decades. The lead issue is the latest weapon in the arsenal against the airports, and frankly it's a little surprising it's taken this long. Leaded auto fuels were phased out in the US 45 years ago. Read the lead report that Santa Clara County commissioned. You could see the conclusion before it was even presented, but there are countless arguments about the effects of what were thought to be trivial lead levels being an issue. Was it biased and predetermined - yes, it seems so - but the counter arguments seem cold-hearted, poorly thought out, and aren't helping much. What would be needed is a comparable report proving that the lead from 100LL is not an issue. Removing 100LL from the airport is no-doubt going to cause major inconveniences and possibly safety hazards, but it's the county's immediate response to the issue.
Don't dismiss this as a "liberal CA thing", it's been simmering for a long time.