This strikes me as a touch too misanthropic.
I went to school on a temporary basis with a whole load of people, who just happened to be my age. It was the same at university - people who happened to pick the same courses as I did. I never chose any of these people, yet I'm lucky enough to have made some wonderful friends, and I think that if I never took the risk to get to know anyone properly (not much risk, IMO - most people aren't putting up a facade that hides some horrible reality, at least not in my experience) my life would be much poorer.
Maybe give your colleagues another chance?
Making friends is good. This isn't about not making friends. This is about how to keep your job. Your boss gives you a job but your coworkers can take it away. Don't listen to advice that is meant for high level businessmen when you're not one. Don't mix worlds, don't find opportunities to create enemies, don't try to turn your workplace into your social life.
I think this advice is too absolute. So many people, in my experience, make positive and long-lasting friendships at work that I just can’t see your advice as being generally good. If anything, in some work cultures I think this kind of aloofness could be very negative - you could end up an outsider: unprotected, uninformed, and alone. I think you could also struggle to build the kinds of networks that can get you into the next job, or open doors in the future.
At the end of the day it’s obviously a personal choice about how you want to treat your work life. YMMV, etc...
Now forced events with peers of varying closeness I'd be more likely to agree with you.
To be perfectly honest you're reinforcing the practise rather than arguing against it like you think. The whole point of everyone getting drunk together is to get to know the "real you". It sounds like the "real you" is quite mercenary, bitter, and reductive. No wonder you don't want to let down your carefully-crafted facade.
And I'm speaking as a standoffish person who seldom to never gets those offers, but my wife often skips the need to job hunt because perfect jobs just fall into her lap from all the connections she's made.
As someone who works for a living for someone else, you are doing yourself no favors by getting drunk around your peers or bosses. As an employee you are trading your labor for money. You aren't necessarily going to be putting anything at stake personally, so whether or not there exists trust between you and your peers matters very little (regardless of MBAisms or management platitudes about teams). As an employee, getting drunk around your peers or being around drunk peers can only lead to negative consequences. The facade people put up is good. You don't want to know what's behind that; you didn't pick these people, you're not marrying these people, you're working with them on a temporary basis then moving on. Also, employees shouldn't talk about politics or religion at work for the same reason.