Original link which seems to have been taken down: https://www.vice.com/en/article/group-behind-steam-censorship-policies-have-powerful-allies-and-targeted-popular-games-with-outlandish-claims/
Update from the author:
It seems like they are genuinely just anti-video game, which is insane. At first i thought they were pro-SA since they try to censor negative depictions of it, but then they also target GTA with blatant lies. Maybe the puritans aren't as dead as they should be and some of them still hate the idea that someone could be having fun.