In the former case, you have close to zero for both. In the latter, you're dragging 2km of line behind a small aircraft, risking the line getting snagged by something on the ground.
A lot of anti-drone jamming is severing the wireless communication between a drone and its operator.
In most of the write-up, these drones were on pre-planned autonomous routes, and would thus not be affected. Unless you also had anti-radar installations :-)
Or hell, some kinda highly-illegal and mostly-unfeasible microwave gun or multi-watt CO2 laser that you could point at a drone and bring it down.
