In addition to the large area of fire, detachable warheads have three other important functions: first, to distract the enemy's defenses and act as a cover for other projectiles to pass through the defense layer, second, to impose a state of intense activity on the defenses in order to weaken and erode the system, and third, to impose a heavy and irreparable financial cost on the enemy.
In this video, it is clearly seen that for only 4 of the dozens of warheads detached from the Iranian missile, 4 interceptor missiles from the American THAAD system were fired.
The announced rate for each interceptor missile from the THAAD system is about $13 million. This means that not only do other warheads hit enemy territory and the system's firepower is quickly depleted, but in just 30 seconds, at least $52 million has been imposed on the enemy's financial plans to intercept 4 warheads from an Iranian missile, which is significant considering the political and social pressures on the opposing front.