Thanks, Metro man,
My stories come from some time ago. In our company a 3E ferry crew had to have a sim training session immediately before carrying out the flight. It was all treated very seriously with, of course, an empty aircraft.
I do not think that they should be banned but, since the airport operator has no control over the quality of the airline operation, I can understand their reluctance to place their head in the noose of blame if all goes wrong.