If you order a steak and you get fish, also a mistake do you deal with the fish and eat it or you make a fuss until you get your stake??
It makes a big difference who's at fault for the mistake...
+1
He was told he'd get something. They didn't deliver. Who cares why he made a fuss? What if they were coming back from a business meeting/negotiations and were from different sides of the table, needed to work, and didn't want the other one reading off the laptop? Who cares? They arranged it.
If 3 hassids buy a row of 3 seats so they won't need to sit next to women, and then the airline changes things, is that also okay?
If you want to get into airline policy, that's a different discussion, but if you care about halacha vs optics...