Erm... no. Spotter planes were an integral part of the more advanced interwar fire control systems and input from one was fed into the system just the same as input from other sources such as the main director. It worked quite well in peace-time exercises and basically not at all in actual combat, for various reasons.
Both the pre-war USN and the IJN quite happily assumed that they would be able to engage the enemy with good effect at ranges of over 30,000 yards. At that kind of range you pretty much have to use spotter aircraft to observe fall of shot.