Hi WildViolet!
This is my first response I've posted to GradCafe. Fitting, no?
I just wanted to shout you out for recognizing the bullshit circle jerk that happens in academia. And I get the method of staying silent. But this is also your education as well, and you're in a PhD program, so you're in it for the long haul. How much longer can you stand it?
Why not just call it out? I think if I were in your situation, rather than staying silent I might make mention of the fact that it was happening. I can't stand hearing people talk just to hear themselves talk! And I feel like the field of education tends to be more forgiving when it comes to formal rules/etiquette of collegiality.
Of course, take my words with a grain of salt. I had a reputation for my bullshit meter. Sometimes it worked for me, and other times it didn't. But I don't regret a single moment that I spoke my mind.
Good luck!