Mark Bunker is Scientology's public enemy number one and has been crusading to expose the dangers of this fraudulent for many years. I keep waiting for him to make an appearance, but the show seems to be more focused on former members.
I don't know what is going on with the man. In this separate crowdfunding he pleads health problems and financial problems: https://www.gofundme.com/facing-eviction-2uzxrfkx. But he also says there that things were getting better.
I've seen Bunker's clips from the film on his site, good stuff. And from hearing him on YouTube videos I can't help but like him. He certainly knows a lot more about Scientology and its people than documentarians that are new to the subject. But I can't help but be a little disappointed, and yes a little pissed off, that promised release dates come and go.