Users do not want the agent to be restricted. They want the agent to read the user's mind and resolving the user's cognitive dissonance and contradictory preferences.

Is the implication that human thinking is inherently inferior to the perfect, all knowing AI?

Again, I find this line of thinking time and time again in the modern AI booster space. There are two ways to deal with a problem. Either deal with it, or make it not a problem. Yes, if everyone was simply AI, maybe there would be no problems, because there's no "problematic thought distributions", but that's not how the world is, is it?

And I suspect that even in your hypothetical, perfect rational world, agents would have "cognitive dissonance and contradictory preferences."

And even in this case, even aside from the inherent complexities in a coherent account of thinking and rationality, what the fuck? Not uploading your entire user home directory is clearly within the rules of a hypothetical non-malicious, intelligent AI. Just because an account of all thought is hard, doesn't mean that some thoughts aren't cut and clear.