He was awarded a D Cat - but not as a crewman, as a pilot. The second quote, for which you unsubtly changed the context, related to something that would probably never happened in the AT world (the full quote being: "Just because something that wouldn't have happened in the AT fleet actually occurred in the rotary world (a crewman, or loadmaster, being assessed as worthy of a pilot D Cat"). No backtracking, no inconsistency, certainly no embellishment - just as I wrote it.
I get it - you have difficulty understanding something that would not have happened in your particular slice of RAF life; I have enough experience to comprehend that and much more. I have no need to accuse you of being over-imaginative, prone to embellishment or even a bull-****ter. That you choose to do so to others is entirely down to you.