Uh... I think I've heard about this? Isn't this some crazy conspiracy theory that hybrids descend from insane huge monster guys, or something? I think it's just an excuse to be a dick to hybrids. Like, "oh, your great great great grandfather literally eats babies". They're kind of a Bigfoot-tier mythical creature but it's not really that cool, since there are actually people who believe the whole "hybrids eat babies" thing and this is part of the logic behind that belief.