Requesting or buying, the end result is the same; the government is obtaining historical location information on private citizens. Arguably, buying it is worse too. At least with a warrant there is ostensibly probable cause to support a search. Circumventing a warrant and buying in bulk means they're searching data of citizens not even suspected of crimes. And you're probably right that the courts (government) are not going to prevent the FBI (a government agency) from doing their job. That doesn't mean I'm wrong in my assessment. It means that you base your idea of correctness on an obviously flawed legal system.
Requesting or buying, the end result is the same; the government is obtaining historical location information on private citizens. Arguably, buying it is worse too. At least with a warrant there is ostensibly probable cause to support a search. Circumventing a warrant and buying in bulk means they're searching data of citizens not even suspected of crimes. And you're probably right that the courts (government) are not going to prevent the FBI (a government agency) from doing their job. That doesn't mean I'm wrong in my assessment. It means that you base your idea of correctness on an obviously flawed legal system.