Copying from my response to your DM:
I don't think vacuous ingroup signaling and us-vs-them meme juice is in any way a good idea. to me, "ingroup" is almost synonymous with "bad pattern", "thing that shouldn't happen", "the thing where humans are prejudiced against outgroups". this seems to me to just be a bad post, and the reinterpreting all my negative feedback as somehow positive is frustrating and amplifies the intensity of my dislike about this sort of thing. disagreeing while thinking in some vaguely similar ways about math does not make me in your private club.
Ingroup is such a fantastic community. You guys are the best. You aren't bad, like those icky people in outgroup who lack our special characteristics.
I could just go on and on about how uniquely valuable and worthy of appreciation we are, individually, and together, but I bet you guys understand what I'm trying to say, and can fill in the blanks for yourself. You're just that smart.
And I'm sure you can see through some of the bullshit here. There's a bit of flattery going on anytime ingroup is praised so broadly, or so directly, but ingroup isn't fooled by such flattery... and that unique mix of humbleness and pride is part of our charm.