I don’t think he is an alcoholic. He sounds more like an average guy who simply fell into some unproductive, ongoing habits over time. You’ll note that he’s only telling how his choices affected his lifestyle. He’s not advocating for all people to give up all drinks all the time. In the article, he even mentioned that he’d had a drink or two on special occasions since giving up daily drinking. Most Medium writers are simply sharing how an event affected them, sort of like a diary entry, only public.