Assuming Carny's statement is true, Karifean did say that the roles are not tied to alignments. So it would be weird if everyone who could affect the narrative would be witches. Moreover, it would be highly peculiar for a witch not to do a night kill because that is always advantageous. Then there is the fact that there is my truth. Also, consider that Carny's truth says affect the narrative not rewriting it, though we know one ability IS rewrite.
Now consider the write up, if we can believe it, the man with the sword sounded like he was intimidating someone but not only that but his motivation was to make sure nothing happened. That sounds like a mass ability.
I agree with Pained. We cant out someone and someone can't role claim without fear of them "activating". Meaning we have to be careful because ability and identities are tied together. But some of these are vague enough that if we're careful we can still have a fruitful discussion.
That being said, I have a strong suspicion that the ability was affecting everyone and a general protection. The narrative indicates that and confirms my own sources.