I don't find the entire narrative in the article plausible. It smacks of the "everybody clapped" genre. This section feels particularly contrived:
> Did you hate me when I was hostage to the cult?" he asked. I'd never heard him use that phrase before.
>
> “I didn't hate you,” I said after a minute. I sensed this was a test, and if I passed, something important was waiting for me. "I was just baffled."
>
> “I hated myself,” he admitted. "I felt trapped. And now I feel so stupid."
>
> He started sobbing, raggedly, struggling to catch his breath. "Why would adults want to do that? Why would they want to fool kids? How could I fall for it?"
True, the wrap-up is rather unusually convenient, but I'd also point out that the author claims that portion occurred significantly later ("last fall"), meaning an older 15/16-year-old who may have some more maturity and time to reflect-on and describe their earlier years.
(Sure, at my age a 2-3 years doesn't seem like a lot, but everything's going faster now, dangit.)
Until this point, I felt the article quite believable. But here I started to doubt. And I end up wondering if it was truthful at all