Well they are giving him a chance to develop at short, he's getting more reps there than pure SS guy Yeltsin Gudino.
I've yet to see a good reason why he can't do it - it's not like he's too big or way too slow.
One thing that hasn't received any publication is how Bo has actually sped up and slimmed down since entering pro ball.
MLB shortstop is super hard so he's probably a 3B or 2B. He's not a f***ing OF though - lazy scouting.