It’s my understanding that the majority of these people are mentally ill, addicts or both. Not sure how this will resolve anything except keep them contained in specified areas. If too far away from the streets they won’t go there. They’ll still need to steal and rob to get their highs....and the mentally ill miss the street life they’re often accustomed to.
Further they’re just going to have more homeless filling their spots....people will still go to California for the weather and access to freebies. And if they can get free housing now it’ll likely be a gold rush there.
If you house them, feed them, give them needles, let them poop and pee where they want and otherwise coddle them... they will come.