People desperately want to escape CA but have no choice because that's where the jobs are. Jobs are there because companies are there. Companies are there because it's not their problem and they don't pay the full cost of their egregious location decisions. It all comes down to supply of jobs vs supply of homes: it's desperately out of balance.
Voters think they can actually stop growth by stopping housing development. It's not the housing that brings people to CA, it's the jobs, especially jobs for immigrants and jobs for people outside of CA (in the US).