According to BIS_fnc_itemType, Binoculars are an "Item". Yet they are not listed in the return of itemCargo, but instead show up in weaponCargo and are treated as weapons.

According to BIS_fnc_itemType, HMD is an "Item" and DO show up in the return of itemCargo, yet they are treated as weapons, similar to binoculars.

Inconsistent behaviour.