"Satan fomented apostasy". What sort of talk is this?
It's talk to cement the idea that apostasy is the Devil's work and make sure the flock want nothing to do with apostates. It is part of programming which puts the WTBTS in a divinely favoured light. It's drip,drip "We are right and others are always wrong, black and white, no tonal nuance, do what we say or else and don't question it" mentality.
In fairyland anything can be believed to be real.