Residential housing costs $750k to build per unit in California, and most of those costs are unique to the process of developing infill in NIMBY cities with high costs of labor. We are two orders of magnitudes away from enough funding to solve homelessness with residential housing in San Francisco for the existing population, notwithstanding induced demand. Treatment outside of city centers for people dealing with mental health and substance abuse issues could be built far more affordably elsewhere by saving on the land and labor costs. They’d also be cheaper to operate.
More generally, your comments come across and smug and sanctimonious — everyone has an interest in solving the problem, and falling back to “homelessness is a housing problem” amounts to tautology which is not particularly insightful.
In the meantime, I will keep harping on best practices for this planet as I best understand them.