Hang on a minute. 'He bought 2 bottles of whisky'? Presumably that's 2 litres or so - not just a couple of little miniatures?
Did the airline really let him drink his way through '2 bottles of whisky' on their flight?
Of course there is no place for drunken hooligans on any aeroplane though. But I'm not convinced that alcohol prohibition would be acceptable to the vast majority of normal travellers.