Is there really anything to be so super concerned about??
Its not a great situation, no, but does it effect you so desperately badly?
Keep your focus on you and learning to live sober.
It's very easy to take the moral high ground once we clean our own act up, but just think about what he put up with from you. For a loooong time.
If he isn't causing any major hassle, other than you just don't like him doing it
Then...... It's a problem, but try to get it "right sized"