These are talking about 48V, so my guess is it's for all the little bits (window motors, wipers, all the internal electronics, switches, turn signal lights, etc etc)
To be honest I'm kind of surprised by the low number. Though I guess each connector has two sides, and they can have tens of pins per connector on the bigger ones.
(Semi-permanent) High voltage connections are usually made with spec-torqued bolts, not plastic connectors. These are for the "low voltage" (<=48V) components spread throughout the vehicle.