Dumbledore is proving to be intransigent and incapable of recognising the changed circumstances in Harry's life. He seems to think that he can still turn Harry into his dutiful little pawn and that just isn't going to happen. If he does not come to understand that his plan for Harry is ruin he will end up ruing the day he implored Harry to fulfill his destiny.
It seems Snape has gotten a clue that the Harry that exists isn't what he expected. It is time for Dumbles to realise the same.