It's a good point, I think a lot of job hunters are desperate for a job. They feel like they need to answer all questions correctly. But they don't feel like they are entitled to ask those same questions back.

I have never done this but I would love to ask some tricky code puzzles to a tech interviewer after they have asked me to do their puzzles. If I have to prove that I'm good, then I'd like proof that I'm joining a team that is equally good.