It doesn't seem to be working that well, does it?
In practice decriminalization was 20% of the action. The important 80% was investing heavily in social workers, public health, and temporary housing so that people on drugs could receive treatment.
What other countries fail to appreciate is that people in these conditions are almost always self-medicating or escaping something. So great, you don't put them in jail, but they continue living in a vicious addictive hell with no hope for a better future or of ever regaining their lives. That's not exactly compassionate is it?
The metric to track can't be: "didn't die" or "didn't incarcerate", it should be "regained their life" and "broke their addiction".
Gee, you are making it very difficult to choose which policy I prefer!
In terms of drugs Norway and Sweden have traditionally not had much drugs - mainly because they are a long way from anywhere.
(Swedes are very anti-drug. While a narrow majority of even Republicans in the US support legalization of cannabis, 83% of Swedes support keeping it illegal: https://www.reuters.com/article/us-sweden-cannabis/in-anti-d...)