Just looked up the episode (2015, Ep8).

They’re investigating whether it would be deadly by cutting through your neck. Drone tech has also changed significantly in the last decade. They literally have trouble flying straight and level and hitting the neck of their dummy. But their main problem is the drone hits something and falls away. They put the same smaller prop on a stick and saw into a plucked chicken. Their bigger one did actually slice the neck open before falling away.

Modern drones have much more powerful motors. Do not randomly assume they will not cut you, especially if you grab them.