I'll meet your (unbelievable) anecdote with an anecdote of my own:
I lived with a close friend and his father for about 5 months back in the 90's and I literally never saw the dad eat a meal or drink water. I'd estimate 90% of his calories came from beer and the rest from whisky or the occasional glass of wine. Both the father and I were jobless at the time and we shared the apartment together for the entire day, so it wasn't like he was grabbing lunch at the office.
I talked to my friend about it and he said that's just the way his dad is. He couldn't even remember the last time his dad actually ate food.
He probably had some sever deficiencies and I have no idea what his internal organs looked like, but just looking at him you'd guess he was the epitome of health... about 130lbs and could run up the 4 flights of stairs without losing his breath. So, I'm going to go ahead and call bullshit on your particular theory.