To be honest, I am also really surprised by the apologism and the creative possible reasons that people come up with (e.g. "Apple couldn't handle the traffic the increased resolution would cause"). But you're right, I didn't say it is a dealbreaker for me and it actually isn't. It is still very likely that I buy this machine - yet stuff like this bothers me, especially at the price point that Apple is commanding.
Imagine buying the top of the class Mercedes S-Class only to find out that the steering wheel is far worse than the ones that Mercedes uses in other models - you'd somehow feel cheated.