Spoilers Emhyr/Ciri Ending Some Questions

Hey,

all spoilers:

in the end of the game, if Radovid and Dijkstra are out of the picture, Nilfgaard wins the war. If Ciri was brought to the Emperor, she's going to be Empress. This is where my questions start: Why would Emhyr ever give anyone else his throne? With the war won, things seem to be going really well for him, even if Geralt didn't bring Ciri to him. Wasn't it always his main motivation to rule? With Emhyr out of the picture, Ciri could undo lots of the stuff Emhyr has worked for for years. Why would he allow that?

The only scenario in which I get it, is that the game does reflect choice and consequence in as many aspects as possible. Meaning the game had to react to Geralt bringing Ciri to Emhyr. But apart from that and solely thinking about it story-wise, I don't get it. The game isn't trying to tell us that Emhyr was some sort of misunderstood hero, who always wanted to give the throne to someone better then himself, right?

Would love to hear some thoughts on this, thanks!