But remember, Acrosport, they are not sueing the airline, they're sueing the manufacturer, while praising the conduct of the airline and its personnel.
Why would the airline consider banning them from travel?
Now this man on the other hand
Man sues Etihad over back injury from sitting next to obese passenger | Business | The Guardian
or this one
http://www.dailymail.co.uk/travel/tr...ur-flight.html
Sueing over incidents is not at all a new phenomena. The BA passengers would seem to have, at least, a more reasonable claim than some.