Teetotalers might be there physically, but they’ve opted out of the shared experience of making themselves vulnerable.
But I suppose alcohol is bad for basically everyone, and the others opt in to that risk as well.
In west coast tech companies with young people of both sexes, I absolutely refuse to drink due to not wanting to be accused of harassment or inappropriate behavior. I'm not a creep, but am older and not really attractive and am treated to a different standard.
Sounds paranoid but have had coworkers accused, penalized, or fired after these events.
I've seen outings in Asia where there's lots of non-sexual touching, arm around shoulders etc, and yet that would be like insta-problem between sexes on the west coast. Getting buzzed means you aren't on high alert for this sort of thing, hence I'll nope out of putting myself in this situation.