In addition to everything else wrong with this, this person clearly does not know divers. Dave is quite possibly the most common phenotype out there.

The guy who AAUS certified me and my wife was Dave-shaped and bowlegged from decades of bubbles in his knee joints (he was diving before they really understood DCI). I remember gearing up to do transects at Hopkins and him shouting "GRAVITY IS NOT MY FRIEND, LET'S GET IN THE WATER".