IRL they will sometimes use CCIP even with precision coordinates, so as to get a last visual on their target. They will start a dive a set distance out, switch to CCIP and pickle on the diamond.
This is called VRP and VIP, with OA1 and 2 for ingress, egress considerations. However, it's still a visual bombing mode, which I don't think the OP is discussing.
However if the line of sight to the target is obstructed by a static object (such as a hill) you should have seen that in your mission planning and planned your profile accordingly. As Bono said, precision coords will give very accurate bombing results, but only if you fly an effective delivery. If you miss under these circumstances the cause is not as you said the precision waypoint method, but bad planning/flying on your part.
I listed a few incidences where one could find themselves missing the target using precision waypoints CCRP, for their consideration; not my own. It goes without saying that an attack profile under a multitude of conditions has to be considered to make sure weapons can be put on target. Once that's done, then it's a very very simple matter of BFM to execute the proper delivery.
Even the "smartest" bomb can't make up for a bad delivery. Flying AG effectively is very challenging, it requires great planning, and then flying the profile exactly.
Of course, but we're discussing no pilot error here from what I gather from Diva's post.
However Diva said that the coordinates are not always exactly on the target, this was never a problem for me.
I've seen it. It happened yesterday for me in a mission over Montenegro. Visibility was zero all the way down to the target that was sitting on top of a mountain. I flew a precision CCRP attack using (4) MK-84s with a clear LOS to the target, and they missed; regardless of the proper coordinates being dialed in from the ICP.