Note: I'm not claiming decriminalization is a panacea. But, decriminalizing without robust diversion/treatment options is bound to fail just as badly as tossing all the addicts in jail.
I'm an Oregonian. I would have preferred that the state enacted robust enforcement of bans on public use and stood up legal use sites rather than recriminalize. I'm not sure that would be politically viable though, and "stand up legal use sites" is easy to write in a law, but it's exactly the kind of thing our public agencies have been utterly incapable of doing in recent years. Where would these legal use sites be? Near which schools, homes, and businesses? Which agency would administer them? Or rather, which agency would administer the contract to a grant-supported non-profit entity (because that's how these things work here)? How would you convince qualified people to work there? Can't be done in Oregon on any kind of timeline that would address the present crisis.
Watching The Wire Season 3 play out in real life has been unfortunate. https://en.m.wikipedia.org/wiki/The_Wire#Season_3