I am sure you will find that there have been plenty of attempts by folks with runners in support that have ended as bit of a disaster and for the same reasons
Boyd Millen was a LDWA member and completed a double BGR in 52hrs 30 in 1977 I think It was and I think he was member 14 of the BG club after completing the BGR in 1973.
I think you would find that plenty of LDWA members are well capable of doing the BGR should they have a mind to, in fact I know some that have, but a lot are modestl and have a tendency just to do things and move on to their next challenge without making a song and dance about what they have done.