Christians (and others) have always needed an enemy, a visible enemy.
Sure the devil is used but 'he' is still largely unreal to humanity, so various agents of him have to invented that can be seen.
For the JWs, it was the catholics, but then they lost interest in the JWs, the governments were a good invention as an enemy but in the developed nations they too lost interest in controling the JWs. There are a few that still try, but the publisher number in those countries is far le$$ than in the good ol USA, the land of first growth.
Now the apostate is the chosen agent of evil. every where and mostly faceless, the entity is ''diabolical and devious'', smarter than a catholic priest and more sneaky than the FBI. Unlike agent smith or father O'Flarety the apostate can hide as your husband, your favorite elder even.
The GB have transformed the apostate into the very transfiguration of satan himself. No wonder the JWs are freaking out.
Oz