And I didn't suggest that you did.
What I was trying to say is, if you (some "you", not you username tracker1) advocate for clearing out the encampments but don't have a clear idea of where they're actually going to go, you're going to be unpleasantly surprised by what happens.
Note the word "actually". Not what you want them to do in some idealized world. What the actual homeless people we have are going to actually do.
Other place they might go is prison. Which is a shame because the nature of socially reforming a non-homed person is not the same as socially reforming a non-non-crime committing person.
Thing about homeless and drug use is dopamine rewiring. Hard drugs hit dopamine hard. A warm house, fresh cup of coffee, warm clean bed and blanket, that sounds nice, but if your dopamine requirement is 9999999 only more hard drugs will give joy. Part of me would love to see a drug that reset dopamine, part of me would hate it because it might make the ultimate drug.
Of course the other disease with homeless is hard psychiatric illness, and we have medicines for it.