I think "desire" is doing some heavy lifting there. Let me explain.
As I've commented before, I played in purely decision-making MUSH based games back in the day for a fair while, playing, in fact in what's been called Deep IC/Immersive in some circles over time.
And there were absolutely cases where the internal model I'd developed made it clear the proper decision was something I very much didn't want them to. But it would have required wrenching myself out of that model and violating what, as best the model told, was the proper responses to events and stimuli.
I think calling that what I "desired" them to do is a kind of odd usage there; sometimes what they did made me distinctly uncomfortable, and once or twice outright upset (since I wasn't immune to what I've seen called "bleed" when the character's feelings transferred back to me).
(I again want to note I've never tended to play in this sort of hard-core Deep IC mode face to face for a number of reasons, and I don't even really find it a good idea for reasons I've expressed. But I think I do understand it and calling it "playing your character as you desire them to behave" is, I think, a sign of not quite getting it).