Koringhus is a pretty extreme example of anything, and difficult to conclude much. However, his decision to save his son was instinctual. This is telling - the first thing he did was to save his son.
Its a peculiar trait of the True Ishual Anasurimbor Dunyain. Though its tangential, Koringhus ultimately goes mad Because of his son, that love. This time his son doesnt literally kill him, but the Qirri shoves a crazy man over the edge, and that mental state can be blamed pretty squarely on The Nameless One.
Its a repeating historical chain of events. Should The Nameless One have a son, I do imagine it will lead to his death.
Hmm, that is a fair point, but I think there is a different way to read Koringhus, where he actually isn't insane. Rather, he is the most sane of all of them.
I mean, his "dividing" of himself is a bit pathological, but it does not seem to lead him to any detrimental behavior (yeah, wait). In fact, it seems to be part of what keeps him, and the child, alive. Granted, eventually he does kill himself, but only after the realization about the detrimental, essential lies, that he was raised on.
So, in the questio for Absolute Freedom, he does take the one act that would have him be absolutely free. Because all other actions would still have, at least, adhered to Rule Zero. Which is actually the rule he was following all along, in saving the boy. The Dunyain actually went
right not wrong with Koringhus, because he is able to replace Rule One with Rule Zero, on the fly. Something that, it seems from Koringhus' description of what the other Dunyain did during the assault, it seems few to none were able to do, that is, adapt.
This is part of what Koringhus says, in his revelations under Mimara's Eye. That the Absolute, that is, perhaps Absolute Freedom, is not a passive thing. It's not a state to reach, it's a radical
action. Not only that, but he takes the radical action the worked toward the survival of the child and not himself. That is, he places another rule even before Rule Zero, because he, in the same sort of sense that Moe the Elder realizes, is that he is not the "future."
Of course, Moe and Kellhus do both die "hand the hands" of their sons, but also, Moe and Kellhus die due to critical misapprehentions about the Outside. Moe in thinking that it does not matter and Kellhus in thinking it was a thing that could be harness and/or bested. Koringhus seems, at least to me, to suffer neither of those. He sees the lie his own self was built on and takes the only path he could to radical freedom, that is, to the thing closest to the Absolute.