I would say so, let in goals near post every game he played this season before he got dropped, fundamental error IMO. Also made bad distribution errors v United that he was very lucky to get away with. Not saying he's necessarily worse than Gazzaniga, they are quite similar in ability.
Ideally Boruc would be first choice, KD on the bench and Gazza would be on loan at a champ club for the season to gain some experience. unfortunately that doesn't look likely to happen.