This issue is more complex than it appears. The catchall phrase 'homeless' doesn't begin to describe the three horsemen of the unsheltered apocalypse: Substance abuse, Serious mental illness and indigents.
While the shelters are often very rough drug dens, ironically many substance abuse casualties refuse care and walk out of other services facilities because they won't or can't abide by the sobriety rules.
I'm very enthusiastic about firms like palletshelter.com because local authorities can quickly set up their heat & ac equipped tiny homes on local land and infrastructure to serve the three distinct group's very different needs. What doesn't work is allowing addicts to camp out in downtown areas for obvious hygiene and practical reasons. This chap who is using his carpentry skills to 'help the homeless' is arguably a well meaning co dependent.
California is an absolute disaster area right now, with half the USA homeless and more coming, 13 billion spent in the last three years on a problem that is getting worse, and the misguided 'housing first' dogma dominating political decision making. The sooner we start behaving responsibly towards the unsheltered and take their disparate issues and needs seriously in the western world the sooner we can begin to tackle this huge issue. Building favelas and skid rows in major cities is a recipe for disaster and so are attempts to provide free housing for everyone who doesn't have one for obvious economic and behavioral/medical reasons.
https://vimeo.com/532718306 Venice Beach in LA 2021