There should have been a lot of other priorities ahead of HDR.
Fact: HDR is a bit of a craze, notwithstanding the fact that most people don't understand it. (I myself just learned from you that film has a wider range than a digital sensor. Thanks.) Angst among photography experts and aficionados regarding the potential misuse of this feature isn't going to be on Apple's radar. They take stuff they think is cool and make it available to the masses.