And the whole "chosen one" thing also applying to the Godhand is more proof that they too are human more than anything else. Griffith was "chosen" by everyone he met, mostly human, not only monsters, and not because he was given the Behelit, even before then, and by people who knew his flaws. We don't actually see what their conversation is like, because the only interaction between them is when the Godhand was giving him some sort of false flashback, but it's implied the old witch lady that traveled with Puck gave Griffith the behelit to protect him from monsters, not doom him to being one.