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.

https://en.m.wikipedia.org/wiki/Graham_cracker