Let's call it what it is - Disagreeing with the Watchtower Bible and Tract Society after baptism into the cult. In no way is the literal definition of the word "apostasy" applicable to what the cult is using the word for. It is a buzz word that scares the crap out of the rank and file and keeps them from communicating with those who have become enlightened about the cults lies.
We here on JWN have accepted the WT label, "apostates", with a sense of humor, such as calling our get togethers Apostafests, etc.
But we are actually the "Enlightened".