Sansa is the only character (other than Varys) who has actually observed what Little Finger does, how he moves through the conflicts and remains completely invisible. Sansa can be a character who in future uses similar tactics to some extent but won’t be able to outsmart LF like it is shown in the show.

Everyone else is trying to brute force their way to the throne but not Baelish, and that’s why he deserves the throne. And it will be morally a shit outcome, he would be a heartless king, and these are the type of people who lead to Cyberpunk 2077 type of future, but he is playing the game correctly.