Side note - since when does a publisher give a random former JW elder an “advance”? Advances are given to celebrities or prominent people for their memoirs.
Advances aren't just for celebrities. Unless you're dealing with a really small Indie publisher an advance of some sort is typical. Five hundred dollars would be a big advance for a first time author. Lloyd's big problem with publishing "The Reluctant Apostate" is that the thing is 200,000 words/800 pages long. The publishers know that NOBODY wants to wade through that to learn the story of some guy stuck in goofy cult.
Edited to add, I just looked up industry standards. A typical memoir runs 60,000 to 80,000 words.
So to people who say "but his videos help so much jw to get out of the cult" I say OH HELL NO!
It's been pointed out before, and his worth mentioning again, a person who is watching anti-watchtower You Tubes is already on their way out, even if they don't know it. My wife and I left the WTBS years before the internet became a thing. The information has always been out there, you just needed the nerve to go look at it.