The basic point is that the seats are generally too small for the majority of people.
Having said that, I came back from AMS last May and had great difficulty fitting in a Club Europe seat - and needed an extension seat belt. 11 days later, I was sent into hospital and when the diuretic worked, I p**d 7.85 litres in 24 hours and lost 13kg in 2 days. So I didn't fit the seat because of illness - which gave me 28 days in hospital and I'm still not back at work. So not everybody who can't fit in a seat is deserving of condemnation. BTW, how do you lose weight when you're on a high dose of steroids?