You're wrong. Giovinco is only younger than Quag. He is not necessarily better or more talented. Take last season at Parma away amd you'll see he has nothing over Quag. No ceiling or floor.
Took one of Serie A's best players from last season only 4 games and already he's being labelled a failure and that he'll never be good enough. Sounds like something totally reasonable thing for Conte to do. Just give up and bench him.
Anyway, Gio will probably rest this game and we'll see either Bendtner or Quag.