It's not the first time he has requested such information. When the British Charity Commission began their investigations he asked Victims to share their story with him, stating that he would act as a go between.
If you get on his wrong side, or even if he just perceives that, he can become nasty.
Let's say you've given him your story and then later sue the Watchtower, you could have compromised your own position. JC and his helpers keep a data base of information for reporting purposes in furtherance of their own agenda.
In fact BCG, case 29 of the ARC, was upset because he and covert fade wanted to write her story, she refused as she wanted to do her own. When she decided this John Cedars then attacked Alexandra James calling her a "regressive activist"( made up word imho), probably because she helped Bo Juel bring his book to fruition as editor. She obviously is a threat to him since she has a proven track record of helping abuse victims get their stories out.