I agree. The legislation on accessibility requires organisations to make what are termed 'reasonable adjustments' to assist people with disabilities where required. That applies not only to wheelchairs but to the building itself. It is all about what is 'reasonable'. I think the offer of the chair is reasonable. Surely the gripe should be with the airline for forgetting to load his own wheelchair on board the aircraft and leaving it behind?
I initially felt very sorry for this guy but now I just feel soory for him because his airline, for whatever reason. didn't load his chair so that it was available for him back at LTN. The spectre of him shuffling through the terminal on his backside was a stunt that conveniently benefited from having a camera rolling at the time! We get to know this now although apparently the incident was in August. He is now claiming something or other from the airport. Really. They had no control over his chair not being transported and offered him the assistance as per the regs as I understand it.
I wonder how he got from the aircraft into the terminal? The whole episode, as it is being told to us, pongs a bit. Cynical - moi?