Once they're arrested that screws up their chances of recovery though. Even if an officer formally books someone and puts them in the drunk tank until the methamphetamine wears off so they don't scratch their own face down to the bone, they were still arrested. That arrest follows them around, and it severely reduces their chances of finding employment that will actually motivate them to work towards financial goals instead of merely just getting by. A lot of former drug addicts end up working in construction or commercial sailing not because they're too dull to be hydronautics engineers or factory logistics overseers, but because those are two of the few well paying industries who will hire regardless of your arrest record.
The U.S. has one of the highest re-offense rates out of any developed nation because an arrest is something employers, banks, and even privately run welfare programs all see as a permanent red flag. It's like someone figuratively puts walls in the way so the person with the arrest on their record is confined to a tiny square, cut off from viable opportunities. What makes it even worse is the combination where some states don't expunge records of juvenile offenses when you turn eighteen if they're federal offenses, and records of arrests aren't differentiated by how long ago they happened. If you got thrown in juvie at sixteen for mail fraud for using your uncle's name to scam magazine subscriptions then in some places like New Jersey that'll still be there when you're forty and will be treated as if it happened yesterday.
From a macro view there's more harm done when you arrest an addict than if you had left them to teeter on the edge of an overdose, which is just really messed up. All because of zero tolerance policies from organizations that have nothing to do with law enforcement.