HaLeiVi -“Perhaps, if more people would drink, the Bochurim wouldn’t have to figure this out on their own. Instead of yelling at them, they should be shown, or told, what to do.”
You are in a dream world. You don’t think their parents or others haven’t told them how much to drink? They don’t listen. They want to get stoned. Some parents have no control of their kids. If the powers that be would put their foot down, the drunkeness wouldn’t occur. Some Rabbonim and/or Rosh Hayeshivos don’t care. So if the parents can’t control these kids and if the leaders don’t care – this is why this situation occurs in many places.
It’s funny but people like you will make excuses for everything. The same thing happens with smoking. The few Rosh Hayeshivos that care you won’t find any smoking in their Yeshiva. And there are always ones who try to challenge the rule in these Yeshivos. And you know what happens in these Yeshivos to these guys? Well they get chucked because the Hanhala takes this seriously. In a lot of Yeshivos, the Hanhala doesn’t take this seriously.