Afaik, there has not previously been an aircraft control system that forcibly overrode pilot inputs repeatedly, after a brief (6 second) delay.
So I believe it is at best disingenuous to claim inadequate pilot training.
People cannot train for systems that are hidden from view, as was the MCAS.
If fully briefed FAA crews cannot recover the aircraft in simulator flights, I do not believe the average line pilot will do better.
The aircraft as currently configured is not airworthy. Is that so hard to accept?