True but being employed goes a long way to giving the perception that you are employable so in the cases that the decision is a toss-up between an unemployed person and an employed one I’d be willing to bet the employed one wins almost every time.
So what its a circle jerk of people putting up with BS, then going through BS again because they did so well the first time?
I mean, maybe their other job isn't doing great, because they clearly have all this time to interview, wonder what is going to happen when they join your company...