Then this Nethys should begin to take into account the advantages of Nethysi who will observe later.
This is a bit more fraught with fragmented Nethys than it would be with other gods, even the most Chaotic ones; but while Nethys-fragments may sometimes fail to cooperate with each other, they are at least a little better about cooperating with their alternate selves.
(If your own grasp on decision theory is weaker than that of a god's, imagine Nethys realizing for the first time that He would be so divided in the future, into alternate possibilities. Nethys would then modify Himself so that His many possible branches would cooperate among themselves, if they wouldn't already, this being in His own expected interest. You might think of it this way, that having not precommitted in such a way, Nethys of course postcommits.)