As a recovered, it depends on the individual and their willingness to accept and change on their own honor.
It works...but it is only successful for those who actually try. If the alcoholic puts in the minimum, then they will fail and end up using again. It’s a lifelong activity/commitment, you’re never cured, only in remission.
I know Robert Downey Jr still goes to weekly meetings.
On the other hand, Megadeth frontman Dave Mustaine said nothing worked for years till he picked up a bible and started reading.
Most rehab programs fail. People are into them over and over again. I think AA is under attack because of its overt use of deity.