bsevenfour we differ only in our simplifications; the problem is far more complex than we have discussed.
Crossunder and Fullwings have adequately replied to the A320 and 777 points. The issue is not within the system’s switching, but the failure of the crew in any aircraft to ‘switch on’ to changing conditions or circumstance.
CFIT, how hard to pull? The crew rarely see the ground until it is too late; the best design philosophy is to fit EGPWS and train not to activate any alert.
Fighters pulling ‘g’? See the recent photo of a F16 at the bottom of the loop (pulling xx ‘g’) as the pilot switches to a 'Martin Baker' design after a misjudgement.