They are probably mixing up history facts with the graham cracker guy:
The graham cracker was inspired by the preaching of Sylvester Graham, who was part of the 19th-century temperance movement. He believed that minimizing pleasure and stimulation of all kinds, including the prevention of masturbation, coupled with a vegetarian diet anchored by bread made from wheat coarsely ground at home, was how God intended people to live, and that following this natural law would keep people healthy.
They are probably mixing up history facts with the graham cracker guy:
https://en.m.wikipedia.org/wiki/Graham_cracker