Kaptin M,
Have You ever worked for one of the outfits TDF380 is talking about? If yes then fine, but if not, with all due respect: You do not know what you are talking about! In theory what you are saying is of course correct but in the real world...
We´ve been to CRM courses for the last 15 years and been told about all different kinds of threats like fatigue, changing sleep cycles, schedule pressure, little fuel ... You´ve all seen the list a hundred times! When it comes to the real day´s work all is forgotten by the managment. OK we´ve given them the CRM course, CAA is happy and now it´s back to running the airline!