Good point. Its almost certainly all my fault.
At the time the race qualification criteria weren't so stringent as it happens. I actually emailed and then called one of the race organisers, told them that I'd run the route before (but was economic with the truth as to quite how I fared) and that I felt I'd be able to run a 4:30 ish time - had I not collapsed from heat exhaustion and raging thirst about half a mile from the end in the race, I would have probably actually done a 4:40 so it wasn't an incredibly bad exaggeration as things turned out. I eventually crawled across the line in 4:54 or something I think. They let me run, that was the main thing.
Nowadays the long races are to an extent going over the top in the race experience stuff I think. Yes its better to have run other suitable races, especially in the Lakes where the ground is terrifying at times and yes mountain experience really helps. Sooner or later though you have to get that experience one way or the other.