Once you can see a group the question will come up “Am I part of that group?” Or “Do I want to be?” And sometimes the group will reject your attempts to join. How you deal with those situations seems to have an outsized effect on your life.
The author clearly sees the groups and recognizes that they have existed for a long time, and then attacks them for their shallowness. Why? For lulz? Because they want to belong but can’t? They seem to reject the idea that groups serve a purpose other than snobbery. At the end of the article I was left with a sense the author was offended but not entirely sure what they were offended by.