I don't understand why there needs to be a catch. It seems like they're just running a hedge fund where they tell everybody which things they're buying. It's an unusual thing to do, because you could probably get better returns by being more secretive (otherwise why are most hedge funds so secretive?).
You can become good at hedge-funding without having money as a primary motivation. If you did, you might try to start an open-access hedge fund just because it's a neat idea.