Mike, It isn't just for green side bunkers. At Lawsonia, L&M used angled bunkers, off the tee shot, to great affect, too. The player can decide, depending on other variables, which side to carry, and receive a proportional result. FREEDOM
I suppose it's one of the modern realities, that people don't want to have to think beyond "carry them".
What's worse is when the archie gives you the challenge but fails to provide the reward. i.e. Ball carries inside dogleg bunker only to find long rough or native grass.