I know exactly what it is and Israel aren't doing it. Period.
They don't have a bomber squadron and they don't have the ordnance to carry out area bombing. A BUFF carries a <deleted>-ton more than 8 bombs, try 70,000 lbs per aircraft.
If they had the hardware and actually started carrying out area bombing then Gaza City would be rubble right now. Which they wouldn't do because it would be counterproductive. The US bombarded Iwo Jima for what was it, two weeks, and the Japanese just waited it out in the tunnels then fight the GIs virtually hand-to-hand.