The genius of the Shahid drone is that the fuel is the warhead. Look at Shahid attacks - mostly FA damage, very little HE damage. They are for killing people and destruction of soft infrastructure by fire, not destruction of hardened infrastructure by explosion.

The fuel tank is heavily segmented, so they are difficult to shoot down. When shot, they lose fuel but continue to the target. They get to the target with less fuel, but still get there. The HE them detonates the remaining fuel load.

A Shahid could do a 2500km mission, and arrive with a very small fuel load. That will be effective against targets that already have enough fuel to burn there, such as apartment buildings, petroleum energy infrastructure, office buildings, etc. Less so against places with little flammable material concentration such as hospitals, military installations (other than fuel and munitions depots), roads and runways, etc.