If California was a country its economy would rank it sixth after the US, Japan, Germany, France, and the United Kingdom. There are many reasons why people want to live there aside from the weather and chief among them are jobs. That draws people from all over. The problem that poses for the Greens is that they don't like people, don't want them causing trees to be cut down to build new homes in which to live and then expecting to be able to turn on their lights and get water from their faucets.
People are just awful.
They drive too many cars. They don't like to recycle stuff. They want to flush a toilet just once. They have babies. They want to send their children to schools.