As soon as you start splitting the record into categories, where do you stop? I can think of at least 6 clear distinctions (recumbent use, car transfers, on-road support, different start-stop points, drafting other riders, multiple countries, etc), presumably each with their own age-related sub-categories, and even then you can be sure someone would ask for another to be added. It's not long before the "record" becomes meaningless as you could have 30 simultaneous "holders".
There is now, at last, a record with (fairly) clearly defined rules, thanks mainly to Steve. It's up to potential challengers whether they are willing to sign up to those rules and, if so, how they can maximise them to their advantage.