I have been indulging in the posts, (pun), and am amazed at the variety of views.
Not having been there, this individual obviously showed signs that brought attention to the fact he may have been drinking. A check was then carried out, and it appeared that traces of alchohol were present. If I drink, and then fly an aircraft, or drive a car, I am aware,that if caught, I will be punished. Remember the old 'responsibility for one's actions'??
Pilots everyday turn up for work, following the code of zero tolerance with alcohol. I am sure some turn up with higher levels within the bloodsteam, and take the chance. As always the preverbial s*** will hit the fan when caught out. Thats life.