I think the key takeaway from other countries that have implemented this is to treat addiction clinically, not criminally. This makes a lot of sense really, given the effects on the body. Ethical sourcing of drugs is another issue, and should be looked at through a legal lens.
Yes, to me this experiment hinges on following through on the treatment side. I hope to see some ongoing reporting on whether the funding that used to be spent on police enforcement, prosecution, and punishment of drug possession is actually diverted to treatment. If counties instead try to "save taxpayer money" on this I think it will end badly.
