2) The PF on the Asiana flight was the junior pilot in type conversion training, and he was under the supervision of the trainer sitting on the right side, so here there is no issue of "Asian FO's not able to speak up against the captain." If the PF did anything stupid, there would be no hesitation by the trainer to speak up and do something about it.
Are you saing the PF did nothing stupid on this flight?
No, I was saying that the issue of hierarchical culture inhibiting the FO from speaking up against the captain does not exist in this situation. The junior was flying the plane under the supervision of the senior. The senior, the training captain, will not feel any inhibition in speaking up when or if he observes the junior, the trainee and the PF, doing something stupid.