Even people desperate to believe that Trump was a Manchurian Candidate dismissed the report’s findings as laughable.
Recent Town Hall Meetings Show Why Fomenting Russia Hysteria Is So Harmful
Michael Tracey

Who, for example?

From the Daily Beast article: “this is a highly risk-averse document that shows deference to the protection of sources and methods over informing the American people.”

In an ongoing investigation, it is important to not let the object of investigation know what you know. The target/s are still being tracked.