Pain sucks, being surprised by a bad seat sucks, etc. Legit medical difficulties are also awful, and it's possible his description of the story is true. But we all know the truth is somewhere between passenger demanding too much for free and airline offering too little for too much money.
But also: he's a grownup going to Argentina, perhaps he has been on airplanes before. The "I ordered the small sandwich but it was small and now I'm still hungry who can I sue" routine is a bit tired.