You're not wrong, but an important distinction in this case (at least according to TFA) is that these were internal documents, not intended for the public/investors.
It can be trusted that someone wrote this for a specific audience. Whether the contextual understanding of that audience matches our own is another matter.
Internal documents doesn't mean they weren't lying. It just changes the target, the expected audience, of the lie. Many workers lie to their bosses. They speak what they think their bosses want to hear, and bosses tell them what lies they want to be told.