Hi, and welcome. Sounds to me like you know what you're dealing with, but want someone to confirm it for you.
Regardless of whether or not he is an alcoholic, his drinking bothers you, so Al-Anon is the place to be. Hope you will stick around here, too. There is lots of good support and wisdom to be had. For now, it's enough to know that you didn't CAUSE the drinking, you can't CONTROL it, and you can't CURE it.