I never said what Palestine is doing understandable based on the cost argument.
I dont have a side in this war, I find both of them equally deplorable. However the economics of a tool used, and how the other side can react to a tool, can be discussed freely, without taking a side. My point was the iron shield which was specifically build to stop rockets from Palestinian territory. The flaw is it is too expensive compared to rocket is takes down. Building rocket or purchasing good rockets is not that expensive. A few weeks of bootcamp is all is required to train soldiers on rockets (with iran and saudi backing, it costs peanuts to train them, and get better rocket tech)