Kobra writes:

But as I said before, the big issue with me was the way he snapped. I just
think he was a young man, given a little authority, probably a junior
trainee controller sitting with him, I'm in charge and fear me attitude and
probably having a bad day.

If he reacts that emotionally to something this trivial, perhaps air traffic
control is not the best career choice for him. Angry young males make poor
air traffic controllers (in fact, they are bad at just about everything except
perhaps bar fights).