It was partly tongue in cheek. And partly not: dogfight episodes pump those actual vets for photogenic substance and then spread that substance so thinly over the TV timeslot that it's nothing like reality, or nothing entertaining. Like it or not, there's more dogfighting substance to the best AH dogfights than any single History Channel Dogfights episode.
AH keyboard experts
strawman
Put another way: AH furballers would probably grovel at "real vets"' feet, and you'd get a much better TV program once the chief editor cropped down AH furballers' interaction with those vets down to the essentials. Why? Because the current "Dogfights" editors are about as cheap as the rest of History Channel's programming. More filler than substance.