Possibly.
Now you're just lying to yourself. Either that or you don't know that many people.
The number of alcoholics out there is staggering. I don't have to leave my own family to find high functioning alcoholics. I knew guys in college who partied and were drunk a lot who barely touch the stuff today. And I know guys from that time who barely slowed down and yet still manage to have a job and a family. They would never say they were alcoholics, but some of them surely are.
Now I fully admit that in fact I don't know that Kavanaugh is an alcoholic. He probably isn't.
(Bet you didn't think I would say that.) Nevertheless, after listening to his testimony where he seem to profess his love for beer a little too enthusiastically, it wouldn't shock me that he could be a high functioning alcoholic.