Lol "sometimes is enough, sometimes not" is a bit of a backpedal from definitively putting cancer into remission.
If it's an area of legitimate research for cancer treatment, then why do you lead with a reference to an individual crackpot - instead of even a poorly designed peer-reviewed study in a low impact forum.
Of the millions of possibilities, why do you assume that it was the keto diet of this individual that lead to their remission? Do you lack the imagination that it would likely be something else?