A lot of the literature I've seen available for those in problematic addictions is oriented around overcoming the destructive patterns. Thus, by definition, any addiction is 'bad'. Replacing one with another is acknowledged, but never held up as a valid endpoint solution. Harm Minimization is probably what Bill had in mind, but it's clearly a compromise.
As I've already mentioned, it's possible to get lost in the maze of definitions. Addictive behaviour does have an aspect of obsessive compulsiveness. But there is a continuum. I can be obsessive compulsive about my one to two cups of coffee a day - but that's not an addiction worth fighting with a twelve-step program, is it?
Now that I think about it, I think there's a lot about human behaviours that is very lightly obsessive compulsive. What carriage on the train you like going home. What order you prepare breakfast in the morning. What TV shows must be watched, week in, week out. Many of these we just call habits. Going to church every Sunday morning. Could these be 'good' addictions? Possibly.
Wade.