I get that, it also happens to be a very popular form of socializing with many people.
To be fair to your point, you can replace alcohol-centric, with bowling, concerts, sporting events, lunch and every single other form of socializing and you can say its a form of exclusion as I can guarantee that no matter what form of socializing you pick I can find someone who it makes uncomfortable.
Honestly sometimes I think the pendulum has swung too far back the other way to inclusion that we are actually exuding people by trying to be all thing to all people and not offending people.