This is a good thing. Even when someone is operating a sUAV in restricted airspace, I don't think jamming it is any safer than just watching it. If there is a near miss it is likely the pilot will take evasive action. Jamming the signal doesn't mean it will automatically drop to the ground. It may have a failsafe and hover in the last known location, or go balls to the wall and climb straight up. Any number of things could happen including flying straight to a full scale airplane.