I think this is just another piece of evidence that the free flow of alcohol in airport lounges and restaurants needs to be curtailed somewhat, perhaps limited to beer and wine. It's especially true in lounges - at least in the restaurants, you have to pay for what you consume. All you need is a credit card that gives you a priority pass, a "Club at NNN" lounge that serves free flowing well liquor of questionable quality at no cost, and someone that lacks the self control needed to order a reasonable amount of alcohol before a flight. Lounge bartenders don't care if they overserve - they don't have to deal with the customer for more than an hour or two while they wait for their flight.
My fear is that incidents like these are going to curtail in-flight service, and that would be a shame. I enjoy a glass of wine with dinner and a tropical drink on flights to destinations like Hawaii. I don't dare get even tipsy on a plane because it'll ruin my body for the first day or two of my trip, or re-entry back into work.
Idiots like this are why we can't have nice things.