How right you are.
In today's world, where every 4th grade student has a recording device, both audio as well as visual, that fbi agents doing interviews that can result in someone's freedom on the line, that they are still making up written reports of their recollection and their impressions of the guilt or innocence of the person being interviewed.
Remember, the fbi can lie to the person, but if that same person 'lies' to the fbi, they go to jail.
General Flynn was stupid to talk with the FBI without legal council present - either his is the NSC legal council depending on what was being brought up by the FBI agents.