That strikes me as a bit of a ridiculous reason to move. The homeless in California are concentrated in a handful of cities, and within those cities, in a handful of neighborhoods. It’s not a problem that you’d be exposed to in a way that truly inconveniences you unless you live or work in very specific locales, and even then, what are the homeless doing that is pushing people to move all the way out of the state rather than just one neighborhood over?
The notion that the homeless population is going to increase tenfold in the near-term also deserves a citation, that’s an immense jump.