Drones were useful at the beginning because of the element of surprise. They are easy to shoot down on once you start watching for them. Drones are nothing more than clay pigeons.
Not if you have one flying above you at night with a thermal sight. I doubt the guys hiding or sleeping in the trench ever knew what killed them. But we do, and perhaps their family members can watch the video to learn how they died. Your chances of shooting down a drone like this at night are slim to none. Thermal sighted drone attack
Against a clear sky, an easy shot.
When they are coming at you chest high, it’s a new ball game!