In a private message to Atwood, Gruber qualified the association of standard with Markdown as “infuriating,” asking the standardizing group to rename the project, to shutdown standardmarkdown.com and to apologize. For a name, Gruber suggested they could use something like Strict Markdown or Pedantic Markdown. Atwood wanted to call it something else, and after waiting less than a day on Gruber’s reaction, he renamed it Common Markdown. But Gruber eventually added that “no form of the word ‘Markdown’ is acceptable to him”, so Atwood & comp. renamed it CommonMark.
So Gruber first suggested “Strict Markdown” and later said that no form of the word Markdown is acceptable? Yeah, OK.