If you've got evidence to back up that these people would have recovered on their own please cite it. The vast majority of these success stories claim that they had tried everything else for years but nothing worked. You can't argue with success. But if you've found an alternative that works better for you, go for it.
I don't have to cite anything, because I'm not the one making claims.
Your claim that millions of people claim to have been helped by AA is based on what?
It's probably true that some people have been helped by AA, but how many? One out of 20? Out of 100? Out of 1000?
And of those who claim to have been helped, what evidence is there that a different method might not only have helped them but helped even more people?