Wilshire are you assuming death is not the mechanism of ascension? Just trying to understand your line of thought.
Yes and no. Sejenus did the whole disappearing into white light thing, right? Whatever he did, it was somehow unique. I think Moe simply died via chorae.
Ascension would be somehow leaving the mortal body with soul and agency intact, enabling the ascended to exercise free will once outside. Simply dying does not afford one this luxury, based on what we've been given in the text. To "ascend" then one must not simply die but be removed from Earwa's material plane in some other way. To those left behind it would probably look more or less the same as death.
I just think the Dunyain goal seems awfully close to how the Gods perceive the world.
Dunyain:
Self-Moving soul, dominating all circumstances, comes before everything, being removed from the cycle of before/after
Outside "Gods":
Subjective reality allows the powerful to carve out existance of their own allowing absolute control of their own realm, exist "outside" of Earwa's 'linear' timeline, able to interact/change Earwa in the past/present/future.
Whether or not it is possible for a human to become a God, it looks like that is what the Dunyain are trying to achieve.
It reminds me of Novikovs Self Consistency Theory, any event giving rise to a Paradox has its probability value reduced to 0% so Kellhus has either already ascended and is already a god or he does not and is not.
This doesn't say if a god did or did not once exist in the linear timeline of Earwa. Just that in the apparently "objective" universal timeframe of reference the Gods always existed. Within Earwa's timeline, since history could be manipulated at any point from Outside, the inhabitants would never know the difference if history was changed or not, since their reality would seem to be self consistent regardless of how the past changed. To them, what was has always been.
Also, our Hundred are far from omniscient/omnipotent. It is entirely possible that they aren't even aware when/where they came from, or how they themselves came to exist, or if they are trapped in some kind of timeline that an even higher agency is looking in upon.
Basically, each level of existence isn't fully aware of a higher power that exists outside their own. Humans<Ciphrang<Gods<True God< ... etc.
In this way, the Fanim, the Inrithi, and all the Cults are "correct" in some respects, but fail to fully comprehend the scope of existence. Maybe the SS sing in the voice of lesser ciphrang, the Mandati with the voice of Gods, and the Cishaurim the voice of their own God. Each a higher power from the previous, thus the power discrepancy.
Maybe some of that made sense

. The thought wasn't fully formed when I started this topic or even this post.