Drug addictions spiral out of control because their lifes suck and they want an escape. If you make their lifes harder you dont help anyone. Drug addiction should be treated in the same way as mental illness.
But the most effective way to help them is to give them a perspective and a way to get out of their situation before they have to stop using the drugs, i.e. give them housing and have a doctor supply them their drugs, then slowly taper them off.
Or just dont let people get homeless in the first place.
This isnt about the official servers being online forever, this is about being able to host your own server without having to crack the game in weird ways.