This person is very clearly mixing things that he knows directly, things that he's read about in books (e.g. Amazon's strategy in the early days), and rumors that he's heard (e.g. Jeff Bezos' personal life). There's no way that a cybersecurity engineer at a company as sprawling as Amazon has reliable firsthand knowledge on so many different unrelated topics. The writer is a faculty associate at the Berkman Klein Cent…
Caesar wrote his books in the third person as well. Bezos seems to me like the kind of guy who'd do that.
Also I'm not too familiar with how Bezos writes, but from the few interviews of him that I've heard, it sounds a lot like him to me. See also this letter... guess the author :). https://twitter.com/LettersOfNote/status/923473337115914240