Would be kind of sad if it was the case, to be honest. Because the fella whose life is at stake in the operation is almost certainly real and not terminally ill due to a marketing campaign. What's more likely is that Kojima stumbled upon this very eccentric doctor and his unorthodox views on consciousness and the human brain as part of his research on the subject of phantom pain (a topic Dr. Canevaro has published several articles about) and then used him as inspiration.
True, that makes more sense. It would be sad if there's no hope for a cure for the man, but at the same time if it was real and he was going to go through with it, he will most likely either die or be left mostly/entirely paralysed. I would love for it to work, if real, it would be one of the most incredible advances in science but it just seems nonsense. I'm reading the Dr's book now and he just seems completely mad.
I'm certainly going to follow the story if true, it's incredibly interesting but I dont know what to believe anymore. Kojima gonna Kojima.