Thats ridiculous.
That makes about as much sense as it would if someone came out demanding proof from a Dr. that Mitt Romney doesn’t dye his hair.
I would agree if Romney had wrote a book about how to turn hair black naturally, had a policy called Hirsute Mass, in which he chastised Bay Staters for not doing enough to have luxurient hair growth, made it part of his Presidential resume, had roots showing, and was getting consulting fees from Clairol.