There was a good reason for that MOS and no reason to eliminate it other than to make life easier for the Personnel Management types. There are very different skill sets and attitudes involved and the two approaches to ground combat, both needed, do not mesh at all well...

It also is, in Korea, partly due to the fact that a lot of Airborne types, light to a fault, go there on an unaccompanied tour in order to get returned to Bragg or to jump status somewhere rather than go for a leg long tour and ending up elsewhere.