Inspectors are human. Humans want what they want. What I didn't see in this story is what impact this had on the OP. To me, that is what would be important here. If I had to pay for a failed inspection, or my GC couldn't start rocking the walls, then I might take issue, otherwise who cares. Most inspectors and jurisdictions I have dealt with have their own idiosynchrasies. You learn to work with them. If to OP's work was up to par (I do assume it was) then the most likely way I would see this one go is:
Inspector; "Sorry you need to have your neutrals and grounds made up before I pass rough walls."
Electrician; "In the walls?"
Inspector; "No, walls and panels."
Electrician; " Sorry, I wasn't aware. They didn't ask that in Timbuck Three jurisdiction. The GC is looking to start sheetrocking tomorrow. Is there any way he can start that and I will get right on making up boxes? I did make sure the conduit and MC was strapped properly for sheetrock installation."
Inspector; "Go ahead, I will make a note to swing by tomorrow and make a quick check that the grounds are made up."
Electrician to his Journeymen; " Get on it. I don;t want to find one box that is wrong. We got a pass on this one."
The End.