I think there is good tactical reason for it and I trust these guys have been doing it long enough to not waste ordinance. I can think of at least one advantage for use with UAV which I won’t speculate on here in the incredibly unlikely event that I might be right.
I didn’t immediately recognise the mos so I googled and the first result is someone trying to ensure they get selected for it haha. I wouldn’t expect it to be fired from the drone but again I won’t guess why because others will speculate too and we’ll be crowd sourcing intel.
This had no right being as loud and satisfying as it was.
This I would love to hear more about if you feel like it.