The reference to the Doctor being a good Dalek in "Dalek" actually made sense in context, as everything in that story had been building up to that moment. The Doctor had been faced with a survivor of the race which had led to the destruction of his people and countless worlds. It got loose and he was driven by rage and vengeance to finish the genocide he'd begun centuries before. That made him a good Dalek and realising it pulled him back to his senses.
In the recent story, it just came off as a blatant wink to the audience and made no sense.
In the recent story, it just came off as a blatant wink to the audience and made no sense.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'