MadScientist28 backstory description is not gender neutral:
"Continuing his research with nothing left to lose, he made minions to carry out the tasks that bored him."
"HIS", "HE", "HIM" should be used there instead of "his", "he" and "him".
AFAIK, since "backstory in game" supporter-created backstories are unique to a single pawn character, and not part of the general pool, they are therefore not required to be gender-neutral.
That is correct. It's kind of inconsistent - some of the supporter backstories are half-gender-neutral'ed - but they're not required to be gender-neutral at the moment, and many of them aren't.