I agree, it would be hard to stop Iran from producing a significant number of long range drones (hard to stop it from getting the parts it needs when it route them through the Stans or the Caspian sea).

Note that neither Ukraine or Russia have air supperiority. It would be much harder for IRGC to build and launch hundreds of drones with basically predators stalking the sky & strikes from manned jets availalbe on short order.