little while back there was a circular from airbus of pilots losing there "piloting skills".... no wonder, now we depend on Papi/Vasi/ILS ...
Well, while I agree with you that the profession is changing, pilots have been landing short ever since the airplane has been around. In fact, the first 747 landed short in seattle during one of its test flights with quite extensive damage. Nobody ever doubted the skill of those pilots.
AUH to JKF is a very long flight, no matter how much in-flight rest you get. And today's airliners are very long (773, A346), it is not as simple and straightforward as making sure things look right.
Considering all the effects that can mess with a pilot's perception during approach, it could happen to anyone.