I suspect that he has forgotten more about heavy jet operations than you'll ever know!
The silly old Crab bar steward's only flown stuff as big as a 737 and even the 400 with centre tanks doesn't qualify as 'heavy'. Reluctantly, even I have to admit his Lightning, Harrier and Red Arrows experience probably qualify him to air his views on a couple of topics but not too many, mind you
Yes, I know him personally and we'd often share inter-service banter when we used to work together, so he definitely doesn't need 'help' in rescuing his reputation from nasty Pontius