part of it is an emotional detachment, or an ability to emotionally detach and view the facts, and drill down to the black and white of the issue at hand.
This makes them impossible to be emotionally manipulated.
You're married, so you've seen this game. But this is autist version:
her: "I get mad when you do X'
autist "That's not my problem if you get mad.'
her: "You don't love me if you don't do Y'
autist: 'not true, one has nothing to do with the other'
her: "Why won't you come with me? I want you to come with me. Everyone else will be there."
autist "Because I dont want to."
her: "You're impossible!'
autist: "you're only mad because Im not doing what you want me to do."
her: "Im leaving!"
autist: "You are an adult and free to do what you want."