Sure he has injury concerns but as of right now the guy is healthy and mashing and its not like I'm proposing they bring him up and give him the starters role. JPA is currently sporting a .245 OPB or something of that nature. Jimenez doesnt hit for much power and but hes shown a ability to make contact so him posting a similar OBP I think would be realistic. I'm not really sure where the .280 OBP number came from seeing its not even close to what JP is currently posting and his career OBP is a brutal .268.
Of course the team is going to say nice things about JPA considering they have basically invested the future position on him. Even if its true that he has gotten better, its like going from downright brutal to now slightly below average. A improvement? Yes but really not something to get very excited about.
A catchers job first and foremost is to play D, call a good game, pitch frame etc and just generally be the general of the team and to anyone thats been watching objectively they can see hes just not very good. Does he have good power? Of course but all the other deficiencies basically negate any good that comes from his power. If he was some stud offensively you could prolly look past his shortcomings as a catcher but the guy has shown that his bat is actually pretty bad and hes not exactly a young player anymore so expecting massive improvement is very unlikely.