Todd stated:

“Oh, no, I am Satoshi. I’m Satoshi Nakamoto.”
BitcoinTalk forum post misinterpretation
The HBO documentary presents evidence in a 2010 post on the BitcoinTalk forum, one of the oldest online communities dedicated to discussing BTC and crypto-related topics.

The filmmaker implies that Todd accidentally posted from his account instead of Satoshi’s, allegedly revealing himself when finishing Satoshi’s thought and disappearing alongside the BTC creator.