If I understand the argument, we have a concern about professionalism, and that professionals, that is, PAID professionals, should be expected to exhibit this sterling quality. I'll grant that. One place we part company, I think, is the idea that paid professionals have a higher standard of responsibility than people who aren't being paid, and yet who have undertaken a responsibility for other people's lives.
I THINK I take my responsibilities to my passengers every bit as seriously when I fly them as a volunteer, as I would if I ever were to fly for pay. I have no problem with flying a little kid for Young Eagles, and letting them manipulate the controls under my direction when it's quiet and easy. When it isn't, I take over, but at no time am I not in charge, any more than the controller was not in charge at any time. I do everything I can to bring the passengers and my airplane back to terra firma in no worse shape than I found them. It takes concentration, training, and attention to detail. So does being an air traffic controller. There are slow times in both tasks, obviously, when the radio is utterly quiet. May I use this time to converse with my passenger? Maybe even joke or point out some scenery? I think so, but not if I'm in the soup 14 miles from a low approach. Can the controller chat with his girlfriend? Not if he has traffic on his scope. Can he invite his well-behaved kid to 'repeat after me' during a slow spell? Obviously, I don't have a problem with that. Like most people, I'd have a problem if he'd let the kid have any latitude for decisionmaking or room for judgment calls. As it was, it seems to me a completely harmless thing.
If everybody else is hyperventilating about it, it would seem more than sufficient that the powers that be should just quietly tell Dad what the rule from now on is and let it drop, so in that, I can agree even with those who think it was an egregious and stupid violation of regulations.
What do you bet, though, that somebody has to hang for this, preferably several somebodies? Substantial swaths of our populace seem to have a mighty vindictive blood lust these days, and only the poor miscreant's head on a pike will do. I do hope I'm wrong.