late diagnosed millenials are like the spiderman meme. finding out most of their close social circle was neurodivergent. not hard to predict self sorting like that. who wants to exhaust themselves trying to maintian connections with people who wont understand them and often get upset at being asked to try?

Actually, excellent. In groups, they cooperate in a better way than neurotypicals.

don't know about that specifically, but what i have read in general is that austistic people as good or better at communicating with each other than allistic people are with each other.