In July, Buma sent the Senate Judiciary Committee a 22-page statement full of eye-popping allegations, and the document leaked and was first reported last month by Insider (after a conservative blogger had posted it online). According to Buma’s account, Giuliani was used as an asset by a Ukrainian oligarch tied to Russian intelligence and other Russian operatives for a disinformation operation that aimed to discredit Joe Biden and boost Trump in the 2020 presidential race. Moreover, Buma says he was the target of retaliation within the bureau for digging into this.
They call it a hoax because, like any conspiracy theorist, they deem that any evidence against their theory is faked or part of the conspiracy. If the conspiracy is “we never landed on the moon,” then any evidence showing that we did was “planted by NASA to fool the gullible.”
In the case of Trump’s Russia connections, the conspiracy theorists (who claim that it’s all a hoax), simply label any evidence as “part of the Deep State hoax.” Once that evidence is explained away like so, they can continue to believe that there’s no evidence and it’s all a hoax.
At this point, Trump could appear on TV with Putin himself and admit to working with Russia to undermine the US and a significant number of right wingers would declare that video faked. Another portion would declare it true, but somehow come to the conclusion that this is actually helping America and that Trump is really playing 12D chess to outmaneuver Putin.