I don't know if he does know that about his father, really. The main thing we get from his whole story during the rite is his inability to really listen to what anyone else is saying; unlike Bakool Ja Ja, who clearly is listening but mainly to look for how to cheat, Zoraal Ja never seems to internalize anything anyone says; he's going through the rite with the same tools every single time, brutally unwilling to take on any learning opportunities. I've compared him to a Dark Souls player, but specifically the kind of Dark Souls player who thinks 'Strength build, solo all bosses' is the only real way to play the game. He tries to use the exact same solution for every challenge, and it's eventually what fails him; not only when he hits the Feat of Repast and can't learn how to cook for the life of him, but also when he finally hits a combat challenge that he can't solo with the Feat of Brotherhood.
Yeah, I genuinely do think that Zoraal Ja never truly learned or understood how his father stopped those wars, because to him every problem is solved in the same way, and his father looks to have the same skillset, so obviously he did too. I think that by the end, he definitely knows that Wuk Lamat and Koana are better successors, and that's part of what haunts him in the Everkeep trial, although I think an open question is how long ago he realized that. Was it when Wuk and Koana beat him both in a duel and in conquest? Was it when they teamed up for the Feat of Brotherhood? Was it the Feat of Repast? Was it years ago and he was the first person to realize Wuk had serious potential? I kinda doubt it's that last one, they probably would've said, but it would go some way towards explaining why we actually never see Zoraal Ja arguing with or insulting Wuk.
