As I understand it they had fantastic results for the health and life outcomes for addicts. Never heard anything about it bringing change to the actual drug market and criminal groups.
I'd be curious to hear about Portugal's experience since it's been 20+ years since mass decriminalization. Whatever novelty effect is long past, and we now have a generation that grew up with the liberal policies. My quick search found articles written right after saying everything was going great, and obvious propaganda say that Portugal was nothing but a heroin den with everyone strung out everywhere.