1. He is competing with the others, no matter what he says.


He's not competing with the others Sid. Moridin made plain what we've been arguing for books now: being Nae'blis means ruling until Shai'tan destroys everything or loses, and that's all. The sole interest Moridin has in it is that he can best help Shai'tan achieve his goal with this authority over the rest of the pathetic bunch of the Chosen. Moridin is Nae'blis because he knows what Shai'tan's victory means and accepts this completely while the others believe in eternal life and ruling forever and this crap, and because Shai'tan naming a Nae'blis tells the others they must outdo themselves in their service if they want to topple him. They can't just kill Moridin, they need to position themselves so they will be the one Chosen to replace him.

Moridin made plain what he thinks of the others, and it's much the same as Verin's opinion of the Forsaken. The Chosen are pathetic, the cesspit of humanity. The Chosen are cornered. Either they obey Moridin or they will die. If they obey Moridin they might well die like Graendal and Semirhage died for their loyalty to him and their blindness to his lies. If they try to turn against Shai'tan they will die. If they remain loyal to the end they will die. They best they could do is ally, dispatch Moridin and put all their knowledge of Shai'tan to the service of those seeking to stop him. But even then, Shaidar Haran would probably find and kill each of them before they could do much. They're too selfish, distrusting, envious and stupid to ally while there's still time, anyway. Demandred would no doubt die before he agreed to serve LTT again. Lanfear would die rather than accept Rand won't ever love her. Etc.

They are no competition to Moridin. If he dies, he wins as long as Shai'tan still wins. If Shai'tan pulls him down, he will still have the reward he seeks if Shai'tan wins, or if Shai'tan destroy his soul, which for Moridin himself would still be a personal victory since the final death is his goal. If Shai'tan loses, Moridin believes he will have another chance to fight and win later... The Chosen are just useful pawns, and Moridin has entered the phase of the game when he's absolutely willing to sacrifice any piece if it brings him closer to victory.