This is unrelated to Ruby and the author is against free speech because he wants to professionaly censor someone because of his work-unrelated opinions.
Plus there are perfectly valid reasons to prefer some categories of people over others. It has nothing to do with hate or fascism, it's only natural.
I'm a DINK (double-income no kids) and I don't feel the hate of DDH, I only see someone who thinks it's worthwhile to be a parent and it's a dead end not to be. It's technically true and you can't argue against that anyway.