Just because someone has a history of being deceitful and making up things to further their own agenda, that doesn't mean we should discount everything they say - especially when it's an extraordinary, n=1 result in the case of a complex disorder.

And honestly, it's kind of disrespectful to bring up someone's history of grifting in this context. We should trust each other more, not less, and that starts with believing people who suggest suspiciously easy answers to questions that have hitherto resisted easy answers.