Well said Danny. You capture the moment as only one could having lived through it. War games can be about as effective as IMF forecasts, and they certainly didn't do the Wehrmacht any favours on D-day when many of their VSOs were gaming instead of directing, or famously taking new shoes home for the Frau!
Why some in the other two Services simply can't accept that the RAF bought the much needed time that meant national survival I really can't imagine, though of course the Army felt unprotected at Dunkirk, and the Navy resented the lack of air resources allocated to it in the Atlantic....