No one is talking about his sitaution NOW, because as unfortunate as it is, its not much to say as an outsider. But Gio when he came back to Juve, and was dominating the Azzurrini, he was hailed by every single god damn calcio profile there is. Capello, Zoff, Sacchi, Zola, you name it, they proclaimed him to a real special talent and future of Italy and so on. He did not get a shortage of praise.
And there been murmurs of Juve not using their youngsters well enough in the club (usually in constrast to when Santon and Balo got their chance in Inter), but yeah not much can be said when he is benched even if he performs or such. Just gets repetetive otherwise.
I cant say much about what kinda plaudits Candreva gets in Italy, but its surely far from what Gio got (Del piero comparisons all the time).
P.S I agree that he is ignored NOW, and fyi dont think he should leave, but he didnt receive too little attention mostly when he shined IMO. Atleast not less then Candreva as you make it seem like (and yes, Candreva is NOT as good as him).