And that of course is the million dollar question, and furthers my point that the whole thing is silly and probably just a couple of SJWs feeling "good" about wielding power over others.
I often wonder, when seated at the exit row on a long haul flight, drink after drink after drink after drink.... I wonder how serious they are about the whole emergency thing. Exit row seats are the most prized seats on the aircraft - even in business class on the upper deck of a 747, for example. They never would restrict alcohol to those seats, and if they did, no one would sit there. If being sober was actually a "real" thing to operate an exit, it would be enforced and enshrined in law. The fact that it isn't speaks volumes. As most of us know, all this safety stuff is mainly theatre, as the chances of surviving a real crash are so slim.