I wonder how many of those people were actual hippies, or just people living in Frisco and partying like kids during the period, as they attended college and then went on to their careers.
They live in one of the most expensive cities in America, how many of them could have been actual hippies? Are you sure they weren’t more of the college kid, or yippie types?
Most of the ones I know were like me living out there; loved the concerts and rebellion against authority. But the problem with them is that they have used that background to push more gov’t intervention into everyone’s lives. They are environmental radicals. They were not happy to make abortion legal but they force everyone to pay for it, they not only stopped discrimination against gays but now they are teaching it to the grade school kids in CA. They have better rules in some cities for illegals than they do for the taxpayers. I could go on and on.
I know some real hippies that live off the land as you describe, but not much in CA liberal areas.