(like subreddits) where the "test" is taken far too seriously.
The INTJ subreddit on that website is laughable. They are the self proclaimed "Mastermind" subreddit. And they all sit around talking about what a burden it is to be the smartest person in the room at all times, yet not have the motivation to do anything with their intelligence. "Oh I'm the smartest, but I don't get things done and I don't like other people because they're dumb" seems to be the common sentiment of every post. Everyone who posts there has some kind of underachieving genius complex. "I'm lazy, antisocial, and play a lot of videogames, welp, must be an introverted genius."
Some people take that test way too seriously.