Actually I think they do. Because both of our perspectives are common sense. I wasn't harassed for not declaring my banana because I said I had picked it up on the plane and it was just a single banana. Common sense. Had I an entire bunch of bananas undeclared, common sense would have again reigned and I would have spent much more time at the the airport that day.

If they harass you for something innocent, it is because of some other reason rather than food.