Welcome to the site. Please ask him to join us, we're typically not a judgemental lot.
People with alcohol issues are from all walks of life, with different severity of issues, though it is generally a progressive affliction.
Homeless folks to housewives that drink too much wine and fall down a lot, to doctors to construction workers, teachers, CEO's to billionaires. Honestly I think that he will be well accepted for catching this problem before it advances to more debilitating stages.
I'm not an AA person myself, but i LOVE their membership requirement. A desire to stop drinking. That's all.
The single most important thing he will need to learn is often the hardest. The only surefire guaranteed fix for the affliction is complete abstinence.