It can pin-point targets. Without people on the ground it can’t reliably identify targets.
Without people on the ground it makes no sense to proceed with the drop. All it takes is one satellite phone, and I cannot imagine any difficulty in delivering it.
In World War II supplies were dropped to guerillas at night, guided by the light of a few small fires in a specific pattern. The CEP was within a hundred yards, even though GPS back then wasn't readily available :-)
In this particular case why would one even drop the supplies over the front line, where they can land on whoever controls this or that pothole? Why not to drop them a few miles deeper into positions of the intended side, where they can be safely accessed? Nobody likes to recover supplies under enemy's fire. The airplanes can approach over the territory held by friendly forces; they don't have to cross the front line and risk taking damage.