unreliable narrator is going to get invoked here
Yeah I know, its a problem, doubly so with the IF given its nature, triply(?) given what I'm claiming lol.
This is not the narrative presented in the books though.
Right. I'm claiming the Inchoroi don't know anything. Which is pretty much true. They are basically skin-spies as far as their knowledge of metaphysics and mission go. Just another weapon race.
I'm pretty sure Ajokli wouldn't be down with.
I'm not so sure about that. According to Ajokli, the Outside is infinite and cannot be shut (obviously wrong), so what the Inchoroi think they are doing is pretty irrelevant (to Ajokli).
What matters is what the IF makes them do. Its the method they are using that's important, and that method gets him trillions of more souls with their actions, as opposed to none with inaction.
Basically makes unwitting servants of whoever looks into it. Win-win for Ajokli.
goal of the Inchoroi is to unleash the No-God. ...
As above.
Just as sure as Yatwer is that both her WLWs are indomitable, so too is Ajokli sure there can be no ill consequences of handing over knowledge of the outside to the Inchoroi.
The Gods' persepective is a strange thing to interpret. Ajokli, post giving of the IF (how Anti-Promethean btw, another point for this theory

) Ajokli could have then invented a way to get into the world prior to it being shut. Again, confusing as hell.
Well, there's the canon explanation which says that it's a machine that links your frame of reference to your fate in the Outside used to kindle the Inchoroi's zeal in shutting off the Outside.
And the thing that most benefits from this reaction is Ajokli. I'm not claiming the cannon is wholesale wrong, just that there is something behind it.
“The Inverse Fire is naught but a window into my House,” the Dark God-Emperor said.
TUC, Chapter 18
Seems pretty straightforward to me
You're interpreting a literal statement about the Inverse Fire being a window into Hell as something else.
What is Hell?
It says 'my house'...
The literal interpretation here is that "my house" is Ajokli's corner of the Outside. (Literally: Ajokli's House).
I think to me the less literal interpretation would be to assume that Ajokli was using "my house" to mean "not my house". And then to interpret the assumed translation of "not my house" to mean Hell(?), and further assume that Hell means everything in the Outside. I'm exaggerating a bit, but still, it seems more literal to take it to mean what it says...
Clearly I don't know the context of the quote (don't recognize it at all) but I think Ajokli would be pretty well aware of his standing in the Outside and wouldn't be using those words so metaphorically.
I'm going to have to look it up later and see what's actually going on.