In my opinion Reinhardt was not “judge shopping “ and neither was Cannon.
It’s almost impossible to judge shop; it is far easier to “venue shop.”
Federal judges have to be appointed by a President, and Cannon’s resume is plenty experienced for the appointment, especially for Fort Pierce Florida. Appointing a younger person is also standard—that lifetime appointment has more lasting effect that way.
In that District there have been three federal judges involved recently, an Obama, a Bill Clinton, and a Trump appointee. Pretty straightforward.
Also, there has never been a contention that the warrant only allowed for seizure of classified or top secret documents. Nor would I expect that there would have been one.