I might also be biased. My dad was a "high-functioning alcoholic" who primarily drank beer. I also suppose that my definition of high-functioning might be a bit different as I think it's just as dangerous as non-functional alcoholism because it's easy to hide. My dad hid his problem well, it was only when he almost killed himself by driving off a cliff into a lake while he was shitfaced drunk that he decided to sober up. If he wasn't as good as hiding it he might've been pressured into stopping before he did as much damage to himself and those around him