Why do you think it's so much likely that when Williams discovered he had Parkinson's his first thought was, "That will diminish my earnings capacity," not "Oh my God I've got Parkinson's?"
Why do you have this pathological need to be right even when it's so glaringly obvious you're wrong? Even your loyal and trusted lieutenant BillRM can't swallow this particular line of bullshit.
If you're wrong about this, you might be wrong about something else, and you can't bear the fact you might be wrong about something in particular. It's something you ought to talk to a professional about.