Go to any alcohol abuse center. Talk to any psychologist specializing in substance abuse. Speak with any alkie. Alcohol abuse is not a self-control issue. It's a manifestation of a number of chemical, psychological, and social influences that manifest in continued excessive consumption of alcohol. While there are people who sack up and never drink again, for 90% of drunks, "Sack up" doesn't work. That's why drugs, rehab centers, and 12 step groups exist. Most people don't have the godlike level of self control required to resist addiction or learned response. And getting to that point has little to do with self control either. Sit down and talk with an alkie or an addict sometime. Most of the ones I know describe it as a "click" in their brain the first time the get drunk. They feel good, they feel whole, their worries and demons safely at bay. They drink because to not do so is unthinkable when that is an option, not because they are "weak" or lacking in control. They have honest to god issues that they are chasing solace from. This is how they want to feel for the rest of their lives. Think about whatever your greatest fears, anxieties, and pains are. Now imagine being free from them. Now imagine them worsened a hundredfold and having the option of being free from them. The strongest man alive would fold in that case. Now imagine you had to sell your soul to do it. Then you might get a modicum of understanding of why people get drunk. Boiling it down to "self-control" is abhorrently simplistic.
As for behavior, I can't help but wonder if you've ever been well and truly drunk. We do the most inane, stupid, ridiculous stuff while drunk, precisely because our self-control has been taken away. We drink more after we get going because our self-control and inhibitions and cares have been removed. When you're a tenth of whiskey in, it's real hard to quit until you run out. Sooner or later you learn your limits, but even so, you've gone through a lot of pain and embarrassment by the time you get there. Good stories come out of it, but it's easy to remember the good times and forget the bad that come out of it.
Look, I ain't against alcohol use. I'm about five beers in right now. But frankly, go to a rehab center. Roll with guys who've lost families, committed crimes, destroyed their bodies and minds. Then come back on here and say alcohol has no negative aspects. Gain an understanding of what these people live with every day, and then call it a self control issue. Wake up in the hospital or in a gutter or on the floor covered in your own puke time and time and time and time again and lose everything and do it all over again, then try to bring your superior attitude up in here. Because from where I'm standing, a boy doesn't want to drink because he might have reason not to, and that's a good thing and his choice. And you're sitting up there trying to claim he should just do it.