Originally Posted by
hartlogan
Perhaps the GA decides that instead of asking everyone, they will randomly ask one person every flight in an attempt to police the priority boarding through random enforcement.
I think the point is that asking doesn't accomplish anything that looking at the boarding pass doesn't also accomplish. However, singling out passengers based on their appearance or demeanor (which, realistically, is almost certainly the criterion the GA was using) risks offending them. Particularly if some aspect of their appearance makes this a frequent occurrence.