I agree with this. I believe the magistrate that signed off on this is starting to engage in CYA mode.^^^ This. I surmise the Judge had his known proclivities toward Trump manipulated (Shades of Whitmer "plot"), and was led to believe the FBI would enter MAL, immediately obtain absolute and unquestionable proof of criminal activity and an idictment or arrest would occur within hours.
Now, the Judge is starting to realize he is either exposed, or he was played. One of the few things he can do to protect himself is expose what was brought to him. If it turns out the FBI's basis for the Warrant was flawed / unlawful the Judge now has some cover. This one however; will be harder for the FBI / administrative state to hide, compared to the FISA court.
A nice side benefit for the country would also be the exposure of further and continued criminal corruption within the FBI. Specifically directed toward one political side and figure.