This doesn't really contradict the author; the army of young coders doing the "day-to-day" work are not the ones envisioning or driving the successes of the com

This doesn't really contradict the author; the army of young coders doing the "day-to-day" work are not the ones envisioning or driving the successes of the company. Any large firm is necessarily going to have a great number of less-experienced grunts than seasoned managers and executives. The implicit point here is that some tech companies seem to fill their higher ranks with kids while AMZN maybe not so much.