This is an insane assertion. Housing the drug-vagrants does not remove the costs of law enforcement and emergency medical for them. It does not even significantly reduce them; In fact, if often increases them because if you have a crack-house rather than a crack-tent, it's harder/more time for law enforcement and medical to deal with; More spread out, actual doors to transit through, and all of the problems with serving warrants to homes.

That said, I'm still all for housing them in permanent buildings. With steel bars.