I wouldn't be so quick to downplay the effect of the drones. First up. it is certainly not as simple as you make out - remember that we are talking about something with a reported 2,500 km (1,600 mi) range that carries a 50 kilograms (110 lb) equiped with tungsten shrapnel similar to the warhead on HIMARS GMLRS. More disturbing, the drones reportedly
use a computer processor manufactured by the American company Altera, RF modules by Analog Devices and LDO chips by Microchip Technology as well as a Texas Instruments TMS320 processor, a Polish made fuel pump on behalf of UK-based company TI Fluid Systems.
Moreover, it doesn't matter if the system is simple or highly complex when you are not he receiving end (dead is still dead). Moreover, they are still forcing the Ukrainian defences to shoot them down and thus consume ammunition. According to the latest report (below), 75 were used in one night. That's a long night with a lot of ammunition presumably being used.
Ukraine shot down all but one of the Shahed kamikaze drones, during an attack that lasted more than six hours.
www.politico.eu