You certainly are painting David as some sort of money-grubbing villain.
As far as I'm aware, albeit from second-hand info, he is owed a great deal of money by the Vulcan mob and has already written off a large amount of it, and would be one of the major creditors if it all fails. This on top of all of his personal money that he poured into keeping the aircraft going before VTST purchased it make him a hero, not a villain. I'm not sure why their accounts says so much has been spent on hangarage when I've heard from more than one source that they haven't actually paid it yet - do you declare debts as money that's effectively been spent already?
I've also seen the figures that the hangar can earn for storage (not of potatoes!), and they are far beyond any reasonable hangarage fees for an aircraft.
Without David Walton 558 would have been scrapped in 1993 and none of us would have been able to enjoy a second chance at seeing her fly. If it all goes tits up now, I wouldn't be surprised to see him becoming more directly involved again.