Also if you don't believe Ken White ( never a wise move) on Judge Cannon not being removed, the chief clerk of the southern district of Florida confirms what he said.
"But Ms. Noble confirmed that no court practice would return the case to be assigned to another judge. In short, Judge Cannon’s assignment is permanent unless she were to step aside."
And her assignment to the case was random. But as the article notes a number of things raised the odds she would be picked, including that several of the possible judges had already reached their annual target caseload.