Whatever Eximus' story was in the past, it was clear that he had been too corrupted by Chaos for any of that to matter. The entire story about his daughter had to be a lie since he didn't know anything about it, and the rest of his reasoning was just nonsense from the start.
"So, the gist of it is that you think the world order is wrong and you want to bring chaos. Cool. Who cares?" Damien said, turning to face Eximus.
"Basically, you're an easily influenceable person who was corrupted by Chaos and used as a vessel to do everything you've done. In fact, I'm starting to realize why I didn't recognize you as a projection from the start."
Damien scoffed.
"You're all that's left of Eximus' ego. The body has already been taken over by Chaos."
It made sense. Eximus may have been feared in the past, but that was when he still had a proper state of mind. He was probably able to commit countless atrocities under the banner of Chaos, serving it as his God.