He said that in reference to coworkers at your job. Some of the women are “mean girls” who gossip about other people, some guys are bullies (obviously not in an in-your-face way), and some of the adults just act like high school students. The only difference is that some of your coworkers are in their 20s, 30s, or 40s.
Would you say thats accurate?
I suspect some jobs have a social setting like high school, the good and the bad, but generally not a bit. I learn stuff, and join clubs and teams, so guess there are some similarities.