1) Anyone claiming to be a pilot, who has not become quite fatigued after a long duty day/night, has never been a professional civilian or military pilot.
2) Have the British/Irish CAA ever listed fatigue as the primary cause of an accident?
3) The (US) NTSB finally admitted that major flightcrew fatigue was the primary factor after a charter DC-8 crew nearly died after a night duty period, resulting in a horrifying cartwheel crash, which had followed a day with not much sleep. The approach at NAS Guantanamo Cuba is reportedly quite demanding. There is no doubt that the Safety Board had trouble with the FAA regulators living with the (for decades) long-overdue findings.
Many Ppuners have solid experience in aviation-others feel that academic knowledge of various subjects, or a wannabe attitude is just as valid!
We know b***s**t when we see it. One of our FOs has a father-in-law who teaches academia at a famous US aviation college. He is also allegedly a knw-it-all who has no experience with the fast-changing situational awareness needed for practical applications, i.e. operational flying in multi-turbine "cross-country" conditions.