Controversial. There are some people who believe that 12-step programs can resemble a "cult" process. However, most professionals in this field definitely do not believe this, and having met tens of thousands of people in aa and na, I do not believe that this is true either. People who benefit from meetings go to more meetings, and get more out of it. Addiction implies it does harm- in most folks it does good.
I believe that some. Are compulsive in how they practice 12 programs. But that is what is necessary for some folks not to destroy their health, their minds and their spirit. I find it hard to fault replacing unhealthy behaviors with healthy ones.