>>712589851If Sargeras was not corrupted he would not corrupt Argus
If Argus was not corrupted he would not disable the Arbiter on death
If the Lich King had conquered Azeroth the champions of Azeroth would not have defeated Argus
If the Undead had defeated Argus the Jailer could never have used Anduin as a pawn to attack the Kyrian
The First Ones explicitly knew one day mortals would get involved and built the Waystones to allow them to leave the Maw/go to Zereth Mortis to stop the Jailer
You know it's canon that the reason the Primus won every battle he ever fought is because he was in contact with some entity that showed him the infinite possibilites of every timeline of every battle, allowing him to choose the best outcome, right? And then the Primus went to the Maw and got all his memories stolen by the Jailer? The idea of him seeing the future isn't remotely far fetched. It's all set up that way.