User blog comment:Misry6/Pure Evil Removal Proposal: Frozen II's Villain/@comment-24834541-20200114075901/@comment-27022982-20200114123740

Honestly, it could still happen with simply enslavement. Even with that outright attack, Runeard may have been using extreme methods to get the Northuldrans under his control instead of simply slaughtering them all. Besides, what I see from an alternative timeline where Runeard is still alive and the spirits not interfering, is simply the Northuldrans getting enslaved, not outright genocide.