system
Given the following post, respond as if you're commenting on Reddit:
human
How to breach subject of "old boys' network" without seeming preachy or passive aggressive?

I'm relatively new to my university, tenure-track. The colleagues that I'm closest with in terms of collaborative projects (both in research and administrative/grant objectives) have a group of dudes who all get together for beers. Everyone in this group is a man around my age (I'm a woman), and this is explicitly billed as a "guys' night". The thing is that they *do* discuss work when they are out, even though it's just a social thing officially. Furthermore, each of them is fairly well-positioned in the university in terms of holding important positions (research chairs, dept chairs, deans, etc) -- as am I, by the way. But the only new profs they invite are other dudes. They invited the president of my university for beers (also a dude around our age) and now they are all buddies. 

All these guys are really great -- they are socially aware and concerned with equity on some level. How to I point out that they are setting up a weird dynamic without making them feel bad or self-conscious. I *don't* want to join their group, by the way... I'm not sufficiently charismatic to be able to make that a comfortable transition for everyone. I just want them to think about this for what it is. They can do what they want with that information.
gpt
pleasant: ask one that you know well if you can join

aggressive: ask the toughest one directly, why they don't invite you, are they afraid that you'll break up their "guys" night out

passive aggressive: just be at the same bar and force them to ask you to join

there are many ways to handle this. after a couple of meetings no one will remember what strategy you initially employed. however, the longer it goes on, the more awkward your initial joining will seem :(