After working call-center IT infrastructure for two years and being exposed to lots of post-high school, fresh-college entrants, in no universe would I ever say the "high school" atmosphere/community is a plus side to anyone working in IT.
I'm not sure if that's hardly an adequate sampling pool of individuals you'd recommend for a job in call-center IT; unless you have a pool of individuals who fall into one of two categories: Extremely seasoned or extremely green.
Now that's not to say anything negative about people who work in IT with Facebook profiles, I'm just suggesting that your response that someone on Facebook 'seems fine with it' is a terrible rebuttal while at the same time defending my stance: anyone who is fine accepting a job that someone describes to them as having a high school environment has either become so jaded to constant bikering and childish "I want my way" attitudes that come from program managers and directors or they're so fresh to the world of enterprise IT that the environment is mistaken as a cake walk.
But then again, I will offer this caveat: You and I probably have two different understandings of what "high school" means when someone uses it to describe a work environment. For me, it has historically never failed to be a gigantic and untreatable pain in my ass.
YMMV.