Disfellowshipping child abusers? That would mean you would have to disfellowship anyone who subjects their children to the misery that is the Watchtower.
How many out there can remember the multitudes of beatings that took place on kingdom hall property with the tacit approval of the Jehovah's Witnesses? As I recall, most of those beatings were doled out to children who were acting age-appropriate in their inability to sit still for hours of brain numbing programming delivered from the podium by idiots.
What about the JW parents who force their children to slave away their childhood years, from house to house without compensation, marketing the JW's hateful message of intolerance to anyone weak-minded enough to listen to it? I'm sure the WTS and its advocates will find some alternative words to characterize this slavery, but it is clearly another form of abuse.
Of course, the emotional trauma experienced by mere adherence to Watchtower rules concerning involvement in school sports and other activities, fellowship with normal people (i.e. "worldly" people), blood, etc., is a form of abuse in and of itself.