The FBI still is very much the agency that it was under Hoover, just a little less overt about it than it used to be. There’s still a strong authoritarian streak there that champs at the bit every time a Democrat is in the White House because of Hoover’s well-ingrained belief that all liberal elements in America were in some way disloyal and anti-American. Given the choice between an utter loon who was singing all the right keys about letting the FBI go nuts with their LEO powers and a Democrat who was talking about the need for putting a leash on LEO in general, it’s not surprising they threw their lot in with the loon.