edit: I feel like these types of feelings and minor disappointments are par for the course on anything I read, but some people seem genuinely pissed off that their expectations have been thoroughly overturned. I'm reading a lot about what they didn't like but not a lot of examples of what type of ending they expected overall? e.g. Return of the King type ending, Last Argument of Kings perhaps? Idk.
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In response:
A) Good, because he didn't. DEM is something that appears without explanation to magically solve the issue at hand. This doesn't happen in any sense of the trope other than literal (ie actual God shows up) which isn't at all what DEM even is (as a literary device).
B) You may choose to fixate on whatever you prefer. I'd imagine though if you count the words, you'll be surprised how much you're overstating it. What you're expressing is an emotional response to emotional scenes - likely a commentary on a certain aspect of the human condition (ie the readers): that grievous violence doesn't get under our skin unless you add sex into it, its OK to slaughter billions but
god forbid there's anything beyond head chopping. The unmitigated gall!
C) All major arcs have closure. That it doesn't fit your prescription of what closure is isn't really the author's fault, is it?
D) It did. Again, YMMV, but I don't think its the author's job to pander to
each reader's sensibilities.
As for Kelmomas affecting the gods, that is explained. He is the No-God, gods can't see him. Gods see the entire timeline, when the timeline changes, the gods change. If you surprise a god, that fundamentally changes that god and Kelmomas always surprises as he is invisible to them.
What? How about when Nau-Cayuti was the No-God...could the gods see Kelmomas then?
Dunkelheit already answered you. Its a complex subject though, and if you want to dig in, you'll have to read more than one post. Short answer, no they couldn't see Kelmomas ever - read the book again or explore the forum for further clarity.