The Doctor is an idiot (foreshadowing!) and Clara confronts him for it. Loved it for the drama and the acting (Capaldi and Coleman are fantastic).

The sci-fi stuff is okayish, I can accept that the moon is an egg and that a dragon hatches from it I guess.

The messaging can be a bit misguided. The first time I watched I loved it. Then I went online and saw the controversy this episode caused. I can understand why people hate this episode, but (having just rewatched it) I just don't think it is the intent of the episode to give that statement, although I believe it should have been better written so it could avoid seeming like it was agreeing with that kind of ideology.

The moral dilemma is there for Clara to realise what kind of person the Doctor is, and to call him out for it, so we can have proper character development (which is what the 12th Doctor's run is all about).