History
Astronauts, test pilots, and Military Pilots (most notoriously fighter pilots) are famous (or infamous) for this. This isn't that shocking.
Ever read or watch the movie "The Right Stuff", remember (if you are an American, if you are a Brit you can look it up) the infamous Tailhook Convention, or descriptions of famous military pilots and aces.
This is surprising given that NASA is Civilian but, most Astronauts are from Military backgrounds. Besides those systems are almost entirely out of the Astronauts hands, so even inebriated they can't screw it up. Alas they should probably just sober up and pray this blows over quickly and quietly (or hangover like Tailhook did for the US Navy Aviation).