No points for drop off at a nearly empty station?

This morning I took a bike from an 8-point pick-up station to a station in downtown Manhattan that, when I arrived, had 43 open docks, and of the 5-6 bikes at the station, only one or two bikes were functional.  But this nearly empty downtown Manhattan station was offering points for *picking up* bikes, not for dropping them off. What gives? I wound up getting no points for the ride because there wasn't a single station downtown in the area of my destination which was either offering drop off or no points and had functioning docks. The only one that offered no points at all, at the base of the Brooklyn Bridge, was almost entirely full except for a single dock that was not working. Ended my 2x streak, too. Pretty frustrating!