It is what it is
John Solomon (38)
My info is that he wasn't drunk at all but rather he became obnoxious, bordering on aggressive when his girl blew up at him about seating arrangements and he in turn vented at airline staff.Very easy Gaffa. I have seen it happen several times.
Sometimes airlines know people are intoxicated at checkin and let them through. Very easy to make a note of this and check at the gate to see if they have improved. He could have then had 2 hours to drink a bit more and stumbled to the gate.
If he wasn't a dick he would be kindly asked to not take the flight and allowed to fly later. If he was a dick, at the least he would not be allowed to fly within a certain time period, at worst arrested by AFP.
Aggressive people on the ground are not normally allowed to go into the air.
Also anybody leaving customs or secured areas must be escorted out of those areas. It's not like there's a turnstile or swinging gate for him or others to stroll through.