Drones have the ability to be more precise than a typical forward air controller plus manned airplane as a drone can be above a target for much longer and that long duration video surveillance gives the opportunity to find the best time for a strike and to verify that it is the target.
You claim that a person on the ground is going to get better identification but they need to be hidden rather far away so that they aren't noticed and aren't hit. This reduces the typically achievable accuracy substantially from the theoretical maximum. Manned aircraft can't stay on target because of refueling needs, speed, and how loud they are, so you have very narrow windows of opportunity. Most ordnance from manned aircraft are also much larger than those used by drones, so manned aircraft typically have larger blast radius and can kill many more unintended people.
So while their can be narrow specific situations where FAC + F35 can deliver more precision, overall a drone provides much more precision and less danger to others.
This is obviously an emotional situation and many people don't believe that it is valid to kill specific individuals, as many others have claimed on this thread.