Being one of the two whose questions on the AMA are referenced in the OP, my take, for what it's worth, is that the Vision (at least the one in GTO) is not Ajokli. I rather feel that the Vision is an outlet for Kellhus' actual being a Prophet and that he chose, for whatever reasons, to ignore and mistrust this experience and to do some demon negotiations instead.
The entity that I believe was actually Ajokli in the text, is "the most crocodilian of the Sons".
That said, a couple of related inconsistencies/questions are present, some of which have been partly addressed in this topic:
- Nau-Cayuti is not a direct ancestor of Kellhus (unless he meant that in a more general way)
- Bakker does at one point claim that Anasurimbors are important as circuits, but in another place claims that not the bloodline but the identity-ambiguity is important. Certainly not all of the Anasurimbors were identity-ambigious and if we trust Akka's dreams not even Nau-Cayuti had any such condition (this is not to say that Akka's dreams should be taken at face value of course).
- More importantly though, what at all is the entire reasoning, motivation and connection to reality of the Celmomian prophecy? Again, if we take Akka's dreams as somewhat authoritative, then it comes from either Gilgaol or Ajokli. Gilgaol can't perceive the No-God and the Apocalypse, meaning it sounds pointless for him to send any such prophecies about the end of the world. Ajokli has SOME motivation to set this entire charade up, since he's in the present and in the past at the same time, but then why the hell do the Mutilated take this seriously at all? If Akka's dreams are not authoritative and something entirely else is going on with the Celmomian prophecy, then why don't we know about it? Narrative wise it would make better sense to let us in the know, no?