Because Americans would not make that trade, and that makes the government worker's job harder. So they spin it in a way that is more palatable so they can erod

Because Americans would not make that trade, and that makes the government worker's job harder. So they spin it in a way that is more palatable so they can erode barriers to their job. They (government workers at the agency) have no real incentives to fight for privacy other than having to live with eroded privacy, which most people just don't think about as giving something up until it affects them anyways.