The same Bill Wilson also wrote “Sobriety, freedom from alcohol, through the teaching and practice of the twelve steps, is the sole purpose of an AA group.”
Joining a twelve step fellowship and not doing the steps is like joining a gym and never using the equipment. The act of joining gets you in the door, but it is the effort you put in to the program that brings the result.
No where does AA claim that meetings and support will keep the real alcoholic sober. In fact it states the proposition that the alcoholic is beyond human aid and then introduces a program of action which will connect us with a greater power to solve our problem. No one has to do the program.
There is nothing compulsory about it, just as no individual AA is compelled to help someone who is not interested in our solution. Just don’t go blaming AA if your approach doesn’t work. A lot of us have tried your approach and it didnt work for us either but we had to find out for ourselves which everyone is free to do.