Well, it doesn't disprove the story, it just disputes the only significant proof corroborating the story. It's reasonable to say that's "casting doubt". It may

Well, it doesn't disprove the story, it just disputes the only significant proof corroborating the story. It's reasonable to say that's "casting doubt". It may very well still be a true story, but now we'll (probably) never really know. Not that I think it matters in the grand scheme of things.