I think it's simply that the intrinsic act of telling someone why they failed to get a job is likely to be unpleasant for the person doing it and that person ha

I think it's simply that the intrinsic act of telling someone why they failed to get a job is likely to be unpleasant for the person doing it and that person has absolutely no incentive to do it. Why would they do an unpleasant task they don't really need to do?