I agree with you, however impact and release points are two completely different things. CCRP might have you "way off target" if it windy enough but yours might tell you to stay on target instead.
As for GP bombs if troops are in the area GP is frowned upon. GP are very unpredictable once released. For thee most part we had on MK82 with an air burst fuze and that was used for "bad guys" in the open. rest was all guided bombs....