Heaven forbid that you should ever need major surgery, but would you have the same attitude if a surgeon took his child to work and let him get on with using the knives and forks? Sometime ago a pilot let his son fly the airliner.. with resulting considerable loss of life.
HD your analogies are completely out of context.
To compare the actions of the JKF ATCO to those of a surgeon who lets his son operate... It's like implying that the JFK child was operating unsupervised making his own decisions.
If you really want to draw an analogy, you could maybe say that the surgeon's child was passing the tools to his father, who would then operate. Slightly different isn't it?
And also.. the analogy of the Aeroflot accident. That is one case of God knows how many thousand times a visitor to the flight deck turned the heading bug, entered a frequency in the comms box, or even the cabin crew sitting in while the Captain's gone to the loo, tapping into the FMC to check the latest estimate for arrival.
Sure. If the kids hadn't been in the cockpit that accident would have never happened, but it's not the child's fault if it happened. It's down to complacency and poor supervision. Every training/mentoring/instructing session is a potential risk. That's why there are specific instructor ratings.
Analogies are a powerful way to put a point across, but I think you are not using yours in a correct way.