Well, yes, even a crackpot can claim to be working in the field.

This in no way supports your claim of “routine” cures through diet. There is no evidence that a fucking keto diet will cure cancer* and it doesn’t pass any sniff test as at the end of the day your body still runs on glucose. This is pretty much an insult to anyone not fortunate enough for their cancer to go spontaneously into remission - and looking at the loon you posted, both he and a family member had some amount of treatment before diet, confounding any claim that diet was responsible for remission.

* whether such a diet can have some survivability benefits or some better or worse outcome is an open question, which has nothing to do with your crackpot claims.