Blame the water boy
Pilot DAR,
I agree.
The ‘failure’ involved the whole system of certification - the process was deficient; its difficult to prosecute a process.
Re Alerts and Warnings; these fell through gaps in certification via assumption - mistaken severity level, differing views of pilots capability. Responsibility for this cannot reside with just one ‘lowly’ person.
It was Boeing’s ball game on a muddy pitch with inadequate refereeing, and when found to be offside, loosing the game, blamed the water boy.