An interesting discussion. Perhaps problems of human behaviour need a compromise solution.
Both forms of safety intervention are required; pilot training as far as is reasonable for cost and effectiveness, and a review of the equipment and operating conditions. A broad front of small changes to improve safety.
M, "Humans do a pretty good job", yes but the whatever enables the good performance can also result in 'pretty good mistakes'.
Humans are variable; we need to reduce variability, or shift it to the good side of the line.
We need to be adaptable, but not too adaptable.
Encountering such dilemmas suggest the need to reduce emphasis on training the human and consider more how technology and operating conditions influence behaviour.
Is there a solution, is there any way to improve without blame and train; can we afford to make small changes and see what happens. Or do we continue with hindsight to target the (wrong) issues, reactive safety not proactive.