“California is the first state to pass a leaded fuel ban. Several other states have similar legislation moving through their legislatures.”
It might be starting in CA, but it most certainly won’t end in CA. If enough states ban 100LL (and especially if they currently use a lot of fuel), it doesn’t really matter what state you live in if the producers feel it is no longer economially viable for them to produce it. And even if you happen to fly an aircraft that doesn’t require 100LL, and you happen to be in a state where you can readily find non-ethanol-contaminated fuel (in many states, this is not the case), it will still ultimately affect you.