We live in a 24/7 news world where so much of the time is filled with speculation. I can't pretend to be unaffected, so here is my speculation:
Should the WTS open the door, just a crack, for the uniquiness of their activities to be brought into play, the argument that they cannot be held liable for the actions of one member toward the other might not stand. The amount of time that adult members and child members spend with each other each week, week in and week out, is somewhat unique. Not all that time can be supervised, but there are policies in place to assume supervisorial responsibility (i.e., the elders will "keep an eye" on a known child abuser). The public ministry is less supervised, where you have a known pedophile interacting with households that include children. This narrows the field of liability considerably as respects the WTS.
I'm not sure the WTS wants to open that door.