Having very recently (and unusually!) occupied an
EXIT seat as a 72-yo, I asked myself carefully how easy it would be to actually lift and throw the 'door' out of the aircraft. On the basis that I can still lift a 23kg suitcase into the back of a 4x4, I felt confident.
From
irmster's last comment, I would indeed be concerned. Two old dears, if I may use such a phrase, are not ideal occupants. But then neither was the rather stout gent in 10C, who might have blocked the EXIT for everyone