"There are now four organisations still holding out — Jehovah's Witnesses, Kenja Communications, the Lakes' Entrance Pony Club and Fairbridge Restored."
This is the current list of organisations that havent joined. There were 6 but 2 joined after the cut-off date.
Kenja Communications, as far as I can tell, is a small, weirdo fringe cult. Fairbridge Restored is a company that is listed as being under administration. And the other one is just a pony club in a small town.
JW's are the only organised religion that have failed to join. They have less than 10 claimants that have registered interest in redress, according to the media, so why hold out? It seems like really bad press for all the wrong reasons.