The two are interconnected. If they weren't addicted to drugs, they probably wouldn't be homeless living in a tent. There's probably no scenario where you get a homeless drug addict into housing and they are able to maintain a normal lifestyle and have a job, take care of themselves, and contribute to society while still being addicted to drugs, so getting them off of drugs is going to be a necessary part of getting their life back on track.
Sure, if someone is addicted to drugs but is still able to maintain a home and otherwise take care of themselves, then that's not society's problem, at least, yet. I still think they'd be better off not doing drugs, but it's not yet to the point where their problems are imposing on other people.
Sure, if someone is addicted to drugs but is still able to maintain a home and otherwise take care of themselves, then that's not society's problem, at least, yet. I still think they'd be better off not doing drugs, but it's not yet to the point where their problems are imposing on other people.