They're not holding on to cherished memories.
> “The paintings have always just sort of been here,” she says, with a chuckle. “We were sort of behind the times… it never occurred to us that anyone would want them.”
They've got stacks of his paintings piled up on the floor. Nothing in the article indicates that they cherish them or are curating them. I don't have a problem with that, but it's not like they're doing anyone any good where they are.
Bob Ross wanted to make painting approachable and demystify it. He started out selling them himself, sold them or gave them away throughout his career. He knew they weren't high art; that was kinda the point. I think he would want them sold off if having one brought joy to someone. Contrary to crushing feelings of goodwill, I think his fans would be grateful for the opportunity to have one of his paintings for themselves. They're not one-of-a-kind masterpieces that belong in a museum; they're paintings for the people.