Unlike the original JFK who had the good sense to realize that his heroics were also more or less a Hollywood PR Man's fantasy, bought and paid for by dear old dad, JF'nK, being poor at the time, did his military fiction without too much professional help.
Apparently, in the faux-hero racket, you get what you pay for. Besides Dad paying for the best story tellers around, the original JFK had a sense of humor about the whole thing, which JF'nK definitely does not!
The man really isn't very smart.