In a (very) recent use of military by NATO countries, more then 20 000 sorties were flown and 17 confirmed mobile targets (tanks, APC, etc...) were destroyed. The other side exercised very high discipline in masking positions and vehicles and used many, many decoys (electric heaters in junk yard cars, microwave ovens, models made of playwood, junk yard cars with pipes through winshild and etc ...) to full the attackers.
Not all 20 000 sorties were SEAD, but in real life, it is very difficult to spot mobile military ground targets.