Not quite sure what the issue is here after reading his email......
He is actually giving some basic pointers out to those who want to listen. Better than being told how rubbish you are and the whole 'why would I employ you routine'.
However on saying all that I can't see why he just doesn't make the H endo a condition of employment. Hire the best people then tell them to get the car license. Like airlines do with ratings these days.