Think about it this way: the CIA discovered information that they believed to be true and chose to not share it whatsoever because wouldn't fit their narrative instead of, say, finding ways to discredit or disprove said information.

When judging trustworthiness you need to think whether it advances their agenda or whether it's against their best interest. If the people trying to destroy you believe you're democratic even when publicly saying otherwise, that has to count for something

Intelligence services like the CIA produce two types of info: disinformation (for public dissemination and propaganda), and correct information (usually for internal consumption only, but also occasionally for the public).

This is a declassified internal memo.

This is an internal document. They lie to the public, but in order to be effective at their crimes they can't lie to themselves.

Tbf it's declassified.