Sorry Jack but I think your'e full of schidt on this one. How do you know that the only people that need to worry are those that drink too much or too near a flight? Do you have anymore knowledge of these tests than the rest of us? The letter from EK even warns about a positive result and being grounded if tested after a recent vacation with drinking.
It's not going to be easy to explain being grounded(suspended medical) during an interview with another airline.