The Death Rattles Are Giving Access to the Spiritual Realm

Terra vangian thinks that the death rattles are giving access to more spiritual realm which would allow you to see the future as he did in his great state. I wonder if this person was beginning a hell bond with this cryptic spren and similar to when yas now almost dies in words of radiance and her spren like pulls her into the cognitive realm instead maybe that's what's happening here. What if they're just attracted to the lies that are being told to tear the engine be like you think you're getting this insight from the spiritual realm but actually you're getting insight from this twisted unmade?