I Am A Real Werewolf

I think that it might be because like you suggested, we are too human, so maybe you could call it a "defect". But I mean, maybe some werewolves are more wolf than human so that they exist on the other side. However, some, like us, are more human so therefore we exist in this side of the veil. Maybe it isn't a defect though, and instead is just normal and divides half the werewolf population by seeing if they are 50% or more in the supernatural realm and the other half into the human realm. Also, everyone on either side is a werewolf, however, I guess it is how much of the time you are the wolf part of you. That's my theory.