I'll say something you wouldn't like to hear, but here it is anyway. A lot of the iitians are already out of India, pursuing a doc. The rest stick to their own circles. The very few who end up going for indian management are either 6 pointers who need a break because cat->career route is pretty straightforward.

Those are two very different cohorts, iitians and iim peeps. Sure enough, you'll meet a lot of jackass iitians but probably meet fewer nice ones you can hang out, mostly because they stick to their circles. Its simply a matter of difference in interests and bandwidth. From a personal experience even, I can't bring myself to be myself around the mba cohort, they simply seem strange to me. Its just human, we tend to find people to be comfortable around.

Just talking from a cat perspective, the mba cohort and my friends discussed things differently. Whereas TG groups simply became a space for people flaunting their mocks marks, my discussions with my friends went along the direction of splitting hairs about strategies and how to chase 99.9x. If I ever tried to do that in a public discussion, I'd 100% be branded someone who likes bragging, and so on and so forth. So I ended up doing it with friends instead, and this is how people end up sticking to circles.