Server side anti cheat can’t distinguish good players from aimbots.
Neither can a rootkit, which should be unconditionally illegal and send CEOs to jail for putting in their product. There are no exceptions and no scenarios where it can possibly be acceptable for a video game to access any operating system anywhere near that level. Every individual case should constitute felony hacking, with no possibility of "user consent" being a defense even if they do actually clearly and explicitly ask for "permission".