Ooh, that's a little ageist, isn't it?
Most "elderly people" are perfectly organised. These days it's more likely to be the young people, distracted by their iPods, Android phones and updating their Facebook status every five minutes that are likely to have to hunt for their railcards and reservations.
Um, no. Sorry, load of tosh.
I respect member's opinions based on their observations, but we can't say either way with this without resorting to conjecture.
Something that perhaps is interesting to think about... the 'Please have tickets, passes and railcards ready for inspection' announcement - which is sometimes varied to state that Route XYZ tickets are not valid and that advance tickets are only valid where supported by a reservation for the xx:xx departure from A.
Make the announcement and its less likely people will be slow or caught by surprise, but the real dodgers will then be forewarned...