The underlying cause might be found in the answer to the following question:
What would have been the consequences for the PF if he had gone around earlier?
Obviously he would have avoided the crash but what would have happened to his training record, comand, promotion, etc? I have not flown in Korea but know some that have and acording to them the consequences of messing up (an approach during training for example) can be pretty harsh.
These are lessons that we learned long long ago. Why don't they sink in?