It's funny how many people on this page are having trouble acknowledging that this is a prevaricating puff piece. He wants to tell a story of his success, and leave in a way that doesn't tank the stock. So he lies a bit about the origin of the company, lies a bit more about their accomplishments, and so on.
I'm not protecting him, this is more like a PR stunt rather than a letter to his employees. Given the history, I can safely say that he might not care _that much_ as shown in this open letter