If you don't decisively win the air war and then don't have extensive medium range and long range air defenses, you become a simple turkey shoot against anyone with air to ground munitions.They made a difference in the Battle of Kiev.
SAM based AD are not effective against modern drones and missiles. This has been proven booth in the ME and Ukraine.
Considering the costs of modern SAM AD systems.....are they worth it?? Not really, IMO. Resources are better spent on offensive systems like Raad, Harbah, Shaheen and drones....which can destroy enemy AC on the ground.
Someone simply needs to use bombers and HALE drones and bomb you into the stone age.
The U.S. "solution" to this problem is to have thousands of air superiority fighters.
Most other countries do not have the luxury of this solution.
The moment the Pakistan air force stops dominating the skies, Pakistan becomes another Armenia in the Armenia Azerbaijan conflict.
PS: Stop quoting retarded propaganda about the "Ghost Of Kiev".