I think the worst part of this is that Emma cares about David. She thinks of him as her family now and she knows, i think she knows, that David losing his father at a young age has really effected him. David thinking that his father was a drunk and sort of like left them really effected David in a bad way and here that isn’t what happened at all. Hook murdered him just because he could.
Hook murdered him and the episode was not about David’s pain and Emma didn’t even care that Hook murdered her father’s dad. She didn’t care. It was all about Hook hiding it and Hook not trusting that Emma would still believe in him. How it wasn’t about how Snow and Charming felt, but about how Hook felt about having to sit across from them knowing what he did. It was about how upset he was about his past and not about how David might feel. David didn’t even care about Hook a week ago. I think it is a big leap to suggest he would just forgive this as if it was nothing. He was talking revenge, killing George, just yesterday.
It was just really terribly written. It made Emma seem dumb and crazy again. It did nothing to make Hook look any better. He still acted the exact same way as always, lying, hiding things, drinking, and only worry about how a situation effected him and not about how it effects anyone else. Hook only cares about himself and no one else. He isn’t even capable of thinking about other people’s feelings and reactions except worrying about how it effects him.