I don't see how this follows. If people were interested in rationality itself, would they be less likely to organize or attend meetups? Why?

It doesn't follow, I was wrong there. I meant to provoke three questions 1.) Are people joining this community mainly because they are interested in rationality and truth or in other people who think like them? 2.) Are meetups instrumental in refining rationality and seeking truth or are they mainly done for the purpose of socializing with other people? 3.) Are people who attend meetups strong enough to withstand the social pressure when it comes to disagreement about explosive issues like risks from AI?