Yeah but “size matters not” I always took the force as something that needs intense focus to really control and that no body faces something like force shot circuit. So a single force using drone would be a conduit for the collective mind of the Borg to use the force. Or at least that’s how I take it.
If we go down the midichlorian rabbit hole. Then the borg should be able to make more of them. Nanobots advanced biology should make it possible to start making force using drones. But I doubt midichlorians are that mundane, ie they are to mystical to really behave scientifically