In the Oryx:Defeated grimoire card it says that now we have killed him so we are gods ourselves and emulate him. So... if we are hive gods all the enemies we kill after we kill oryx are technically sacrifices to ourselves. Also in our killing him we have mantled his title of a god and we also destroyed potential gods (Ir Anuk and Ir Halak). Finally if we technically hive gods wouldn't the Hive want to kill us so they can become gods themselves. I have explained the Hive's aggression against us prior to killing Oryx and the other races aggression alongside that.
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We are not Hive gods. When Oryx was consumed by his Worm at the end of King's Fall he left a hole in the universe. The power still sits there and the place Oryx once held in the universe aches to be filled. Due to the stupid amounts of power we acquired according to Sword Logic we had the ability, if we wanted, to attempt to mantle Oryx and become the next Taken King. We refused, but Osmium Throne still lies empty. It's why we had to kill Alak Hul and Malok, since they also had enough power to try and become the next Taken King.