Maybe they are leaving because God is calling them out of there before the big quake, epicenter under San Francisco.
You may be right. I know a Christian family that moved here from SF. They said it had become a cesspool. They were sad because that was their home and there were still a lot of good Christian people there, but they didn’t feel like they wanted to raise their children in that atmosphere. I don’t know if you are right, but I do know Our Father looks after his children. God Bless you and Yours - JM