Originally Posted by JohnBurke

No, we shouldn't, as MVA is a useful altitude with a purpose. A vector, however, which is the function of the MVA, presupposes that the controller is taking responsibility for terrain clearance and traffic separation. When assigned to an approach segment, in which the pilot ultimately has responsibility, the pilot should determine the altitude to fly...especially an "at or above" clearance.

The controller has NO business including the MVA in that clearance, however, as it serves NO purpose in that application, and it dangles a very dangerous carrot. It so happens in this case that the crew tried to take a bite.