Well, yes. I've been working in a bar (and in charge of it) and drunk people are really annoying.
I always used to drink myself too for that reason (well, also because I liked to), with specific limits because I still needed to maintain order. I found it's actually easier to maintain order while drinking a bit because the interaction with drunk people is more natural and smooth. If you're 'dry' you're too strict and only triggering them more. But maybe that's just me.
Mind you this was in the mid-90s when things weren't as strict as they are now. Our bar was a private club and pretty much a dive and we didn't obey any noise, closing hours, or maximum occupancy regulations either. If we had a big party I'd wear a police scanner sometimes to hear them coming so we could turn the music down :P
I find bars a bit boring in general these days. No smoking, grumpy security goons everywhere, strict opening hours and drinking limits. Not to mention the closing of bars for almost 2 years. I really do feel for the younger people now. Because back then the going out scene was really important in my life too and later in life these things are different.
What the article says about the price increase is a good point though. Our place was extremely cheap and even a round for the whole bar was usually in the range of 20 bucks. These days alcohol is a lot more expensive. However soft drinks are usually in the same price range as beer these days so I don't really see how that would stop people from drinking alcohol.
FWIW I had several periods in my life with extremely heavy party drinking but I've never got addicted. Every time I was able to just drop it when my circumstances changed and right now I drink only once a month or so. I don't regret those periods at all and I wouldn't have wanted to miss them. It did help me socialise and stretch my barriers which I really needed as an adolescent. Because I was a lot more shy than I really wanted to be. It was really an invaluable tool to get 'out of my shell'. Alcohol is not always a bad thing IMO.