Earlier quoted context omitted.
Not sure why you're being down voted, this is the most honest statement about so called "homelessness" in the united states. It is affordable housing advocates essentially leveraging the mentally ill while completely ignoring their plight.
But if you ask anyone who works to house the unhoused, the affordability of homes is the problem. If you don't have shelter to rely on, how can you possibly treat your mental illness in a safe environment. I actually think it is truly both. IT's the lack of available mental health treatment and the lack of affordable housing. Neither can be fixed with the perverse incentives of the current system we have.
Almost all people you see on the streets end up there after burning all bridges in their personal lives because of their illness. You may not be aware of this but there are in fact a lot of options in existence for housing such people, it doesn't work because they are ill and without treatment (forceful), it is hopeless trying to help them.