Indeed it does. Its just that even if De Ceglie has to take a big step (and we should give him time), it wont be as big as Criscito tried to, due to the difference in and burden of the positions. And the fact he has little to no competition in that his only competition is Molinaro.
If we dont buy an LB, and it looks quite likely we wont, I think its a positive sign of what the management and Ranieri thinks of De Ceglies quality, to trust enough to take that risk. Because they already seen and know Molinaro, and would have undoubtly signed a fullback if they had thought De Ceglie wouldnt be enough.