Some of the counter-measures shown seem to rely on the aircraft needing connectivity with the remote control in order to operate. For example, some of the video

Some of the counter-measures shown seem to rely on the aircraft needing connectivity with the remote control in order to operate. For example, some of the videos show that by blocking RF, the aircraft slowly descends to the ground. I see this as a problem, because many drones/UAVs can be configured with waypoints and "loss of connectivity" logic. You can configure drones to fly a set of waypoints and continue doing that, even if connectivity is lost. This is really concerning, and I think the article points this out saying that countermeasures are way behind the attack vectors.