Probably true, but people don't learn that until after they've set up a subreddit and it's gotten somewhat successful. For their own site, they're immediately

Probably true, but people don't learn that until after they've set up a subreddit and it's gotten somewhat successful. For their own site, they're immediately hit with a wall of pain as they try to figure out what all they need to know just to get their first user. And there's nothing driving those users to their new forum, either.