I've been doing the same. I even tell recruiters and interviewers "if I was unemployed, you'd be getting a very different version of me". It adds more fuel to the notion of why employed people are so much better to recruit, because you get more signal and less noise.
We've all known for a while that being unemployed, and having that desperation stink on you, is a bad situation. But I'd never really considered it from the hiring side, that when you are interviewing someone who desperately needs a job, you're interviewing more of an actor.