The only reason he's not even better than Buster Posey is because the Jays haven't given him a chance to be in the post season. So really, it's the rest of the players who are at fault here...
Alright JPA... Literally do not swing until you have 2 strikes... Then close your eyes and swing as hard as you can. It's about the best I can hope for from you.
Maybe it's one of those "we keep our best prospects in AA" situations... Might be more convenient to bring him up from there? (I don't know the geography). Unless they have a glaring need for him on the MLB roster, I guess.