My experience with the NY Less Wrong group, of which I had been a part, is that we are, indeed, a bunch of silly people who like to do things that are silly, such as cuddle-piling, because they're fun to do and we don't care that much about appearing dignified in front of each other. If silliness bothers you, then you might very well be right in concluding that you wouldn't enjoy hanging out with them in person.