This is a result of NIMBYism in those neighborhoods, not any Jump bike policy.
Irrespective, would still be easy (and overall nicer) if they made that transparent.
http://www.sfexaminer.com/bike-battle-ignited-rentals-fear-f...
Edit: The lack of bikeshare on 24th street is a separate issue with Calle 24, which could reasonably be called NIMBYism.