You may be joking, but I think that is a big part of what they look for, consciously or not. Progressives can be pretty happy discussing news and ideas with other progressives. Conservatives don’t want to talk about things too much unless there’s an argument to be had.
I’ve been in some of those groups. They don’t discuss ideas. They discuss people and events, sports, maybe what they did last weekend or plant to do this weekend, talk about their families.