If a bishop can’t ask that question, you are showing that you don’t care about the answer, and thus that your moral position isn’t that important.
There are good arguments to be made both for and against how these interviews are currently handled, but I never felt awkward in these interviews. And the questions aren’t obscene either - more like “Are you following the law of chastity?”
It’s one thing to ask them if they’ve sinned it’s another to kick them from the church forever if they have! What is up with that? No forgiveness? That will just teach them to not tell. Besides the bishops they are confessing to? Wanna bet they did the same sins they kicked these people from the church for?
Simple question; but just what IS this 'law'?