I would prefer our drone defenses actually work against real drones, and that only happens by having real opponents. Or do you not believe in red teaming?
That isn’t real opponents, it’s useful for training but you don’t need actual drones to red team. I don’t know how many times I had to use my imagination in the military when we were fighting paper opponents that were non existent but we had to maneuver and walk through processes as if we had a missile inbound. Or those situations where we had a real target but we weren’t allowed to actually shoot at it because it was reserved for another unit to actually shoot at.