Drug policy reform is extremely difficult to carry out well, mostly due to the social impact it has on both the populace and governing bodies - adjustment doesn't happen immediately and are likely to be bumps in the road. From the sound of the article, it sounds like Norway is headed in the right direction, though it may take everyone a bit to get on the right path. Still, this is already happening elsewhere in the world[1], and I think it will continue to happen more as time goes on.
I don't know many details of Norway's drug policies (nor Portugal's, for that matter), but it makes sense that decriminalization + treatment, when implemented well, will generally far exceed incarceration when it comes to overall effectiveness and impact on reducing drug abuse, crime, and deaths.
I hear people are pretty happy in Norway (compared to the states, at least), but police harassment is never any fun - I hope things improve there.
[1] https://www.theguardian.com/news/2017/dec/05/portugals-radic...