Deep and fast.
While what you say is undoubtedly accurate, I don't think you'll have much luck convincing the incumbent egos in EK of the reality of the situation. To point out that company is quite capable of finding suitable candidates by lowering some of the arbitrary thresholds somehow diminishes their fragile self-esteem and the status of their position.
Unfortunately, a lot of the established captains in EK are some way removed from having their feet on the ground probably as a result of living the Dubai dream and having successfully navigated their way through a pedantic regime into the LHS. Humility is often not the product of those 2 factors. Add in the fact that many are trapped by the cash, fed up with the roster and in denial about their health and it's no surprise that they don't like being told that they are not universally revered after all.