while i grew up around it, and consequently have experiences to share with talking to addicts, i actually have little positive to say about the aa/na system. if anything, i think it fed into a cycle of guilt and dependency that kept my mother reliant on it. but, there's a false dichotomy out there that forces you to choose between the "scientific" ideas of harm reduction and the "religiosity" of abstinence.
in fact, the science upholds abstinence as the preferable approach to actually eliminating addiction, but in order to really utilize the fact, it would have to be separated from the cult that is the minnesota model.
i tried to get her to go to science-based addictions counseling, but it's underfunded and kind of obscure. to a lifelong addict, aa is a social club. you meet friends, you find partners - it's a community, and in fact is not unlike a church. whatever it's defects, it has that.
think of it like this: aa is the social network that nobody really likes but everybody knows everybody is on, so it's hard to get off of it, even if you know the other platforms are way better. so, you need mass migration in order for it to work.