It is appalling that the front office considers him to be the shortstop of the future.
The only rational explanation why he is now playing shortstop regularly: he needs to be in the lineup (because of his offense), there is nobody else on the roster who can play shortstop, there is no other position available, and the long term plan (i.e. after this season) is to hide him at some other position.
I hope that's the long term plan, anyway. But in the meantime, I'd play him occasionally in left field and at first base, when those guys need a rest, just to see if he is a long term solution for either of those two positions.
You would play a 22 year old who has showed a very impressive bat "occasionally" in two positions that he has never played before when the likes of Yadiel Hernandez needs rest? Great way to rebuild a franchise.
