Drones are just one part of the equation. They are a “last mile” solution, which makes them very strong on battle fronts and come with a defender advantage.

We still require logistics to transport the drones into effective range, intelligence to know the most effective targets, and military grade wireless communications to guide the drones.

If the intelligence is good enough long range missiles can kinetically disable drone production or drone stockpiles.

They print the drones at the frontline: https://sensofusion.com/dronefactory/

Militaries are already using on-device AI to provide drone targeting, so airdropping a bunch in and letting them wreak havoc is very possible and not complicated as that matures.