Come on, people. It was an unprofessional move at an International airport by a controller who should have thought a bit more about it.
We can discuss forever about "What If" ... that's not the point. Forget the detail, forget the trivia, it's simply not a good move at an International Airport. It makes the entire ATC operation look slack, and sloppy, and ... unprofessional.
With luck, the controller will have a job in a week' time.
Let's put it to bed, eh?