This is actully quite the opposite all military experts agree that KSA has the most experienced Air-defense systems they have neutralized a seas of drones and missiles making them the most experienced whereas s400 doesn't even remotely come close to that ratio kill whereas we have seen the Iron dome in action not even remotely close because they use a layer of 7-8 systems that complement each other well.. They have approx. taken out of the skies nearly 50k of drones and BM's effortlessly..
A former US intelligence official said that the Saudi air defense is the most experienced militarily in the world, praising the value of air defenses in confronting the persistent hostile targeting by the Houthi militia.
Recent events show that the Saudi Air Force has become capable of responding well to Houthi attempts to outmaneuver Saudi air defenses through many successive attacks or Consecutive Attacks (Dumping)
The statement came after the Saudi air defense successfully countred Attempted simultaneous attack of more than 17 suicide drones!
Patriot
VL MICA
Mistral Atlas
Mistral MPCV
Sky Guard 3
Shahine short-range air defence (SHORAD) systems
AMX-30SA
MIM-23 HAWK
Stinger
M163 VADS
And still more air-defense systems coming..
BiHo II
THAAD