My understanding from reading past posts is that they think this could be a great way to discover people who would be interested in roles at companies they hadn't previously considered. Shotgunning everyone who plays as leads isn't a great model as it lowers perceived quality of the candidates they send on ("I got a lead for this amazing developer, but she didn't want to change jobs at all, wtf?!").

Think of it as a game with "new job" as a piece of available loot. Play it because it seems fun (and you still might learn something that you can use later).