Those drones also served other purposes: 1) They distracted the Israeli air force and the air force of their Western backers to spend considerable time battling them; 2) they also forced the Israelis and their Western backers to deplete their air defense interceptors in a quicker pace.
It is like killing 2 birds with 1 stone. The much-vaunted, "impenetrable" Israeli ADS has been exposed in just 12 days. I know people were attacking the #IRGC on how they excused the war, especially the slow pace they were launching those missiles, but since the dust is settling now, it is becoming clear that the Aero-Space Forces of the #IRGVC executed this 12-day war professionally.
That being said, Iranian internal security, especially Tehran and its environs, was lacking. The whole internal security of Iran needs overhaul, and they need to return the revolutionary seal similar to the early days of the Iranian revolution. No terrorist agent could survive in such an environment.
