I expect that most of the criticism from the Sad Puppies and their ilk is that it's not a book by Men for Men doing Manly Men Things with other Manly Men.

This is a group of people where "normal" = White Heterosexual Men as I learned when I was castigated for using the term "cisgender" (the opposite of "transgender;" it's not a terribly new usage and it's quite in keeping with similar usages such as "Transalpine Gaul" and "Cisalpine Gaul") by people who said, "Oh, you mean 'normal.'"