Perhaps, Lockstock, you need to re-read the quote: he was not "given pilot wings on the basis of one sortie" as you write, he was categorised as a D Cat pilot, but was not able to carry out those duties until he had been through the BFT/ RW/ OCU courses and then been awarded his wings. Any BS you can smell is local; the pilot continued to practise his skills after leaving the RAF as a HEMS operator then as an instructor in the civ world.
Quite how you get from STANEVAL recognising the exceptional qualities of one crewman to there being something wrong and dangerous with that fleet is not clear to me.