It is so pleasant and so rare to agree with people these days. I agree with you.
It is signal for me. My interview consists of many areas beyond coding. But coding is one I explore too. (like write a methods with two sequential loops and single if in your favorite language.) You would not believe, some 30% people fail.
Mentor or programmer -- we need both qualities in the end. both extremes are harmful. To be a good mentor, one need to have respect of colleagues -- and it comes from contribution too.
gamble -- agree again.