You'd actually be better off not trying to analyze/define something you know nothing about. Just know drunks, dry or sober or active, does not qualify you to judge.
While I may not agree with Ebert's politics I would not use his politics to judge his sobriety.
Having been sober for over twenty years I have learned that sobriety is not something that's judged - just lived.
I’ll judge who I please thank you, whether you approve or not.