It’s not weird that you believe automated ATC is possible. The weird thing is that you insist it’s simple.
People’s lives hang in the balance of a system built of corner cases. And you trot out radiation treatment as your metaphor? As if we didn’t royally fuck that up and kill a bunch of people at first.
The 'simple' remark was in response to your wide-eyed implication that 1000 takeoffs and landings per day is somehow a challenge for modern computing systems.
You'll lose this argument sooner or later. I just hope it happens before several hundred people find out the hard way that humans no longer have any business in a control tower. With your attitude, Therac-25 would have been seen as grounds to shut down the entire field of radiotherapy.