The fundamental and inconvenient dilemma that the Church of Asmodeus faces is that they could not just train very rigid patterns of thought and complete insensitivity to desires.
Preventing a system from transitioning from "memorizing driving routes between origin-destination pairs" to "learning a fast-updating map of the city, preferring destinations, and planning routes there using the map" is like trying to prevent a neural network being trained on examples of modular arithmetic from learning circuits that do general modular arithmetic. Even if you can do that successfully, it keeps the sample complexity of the system high; results in it being worse at navigation, and making lots of oracle calls. It will not be able to do much that its superiors cannot instruct it in exactly how to do.
6th-circle clerics aren't actually as useful, if you try to hammer them out of wanting things, because the higher and more abstract meaning of 'wanting' inside cognition is 'plotting routes using maps to transform preferred outcomes onto preferred intermediate events'.
Just statistical learning on taking lots of paths from origins to destinations will cause a sufficiently powerful statistical learner to learn mapping and planning. And conversely, preventing that learning, even if you can prevent it, will mean the entity doesn't acquire the kind of capabilities that general planners have, to do things further from what was taught and demonstrated in the dataset.
Similarly, punishing your 6th-circle clerics for wanting anything, will result in them showing less initiative and creativity -- initiative, as in "ability to solve problems without querying their superiors/oracles infeasibly many times", and creativity, as in "ability to solve problems not drawn from an identical distribution to problems that their superiors/datasets showed them solutions for".
Any viewpoint from computer science that doesn't make these situations sound nearly equivalent is insufficiently advanced.
The reason why dath ilan really really wants its Limited Creations to not have qualia is that a lot of the engineering dilemmas about creating them and yet having them stay safe, is quite a lot like the sort of difficulties and tradeoffs that Hell faces in the finicky cognitive details of training a mortal slave who'll stay enslaved even if they acquire a powerful headband or find themselves on a distant exoplanet.
Hell in fact mostly discards that use-case, in favor of more common ones. They've got one Aspexia Rugatonn and one Abrogail Thrune, and everyone else gets less powerful headbands and queries superior-oracles about weird situations. Hell is not, actually, trying to build corrigible superintelligences with the kind of tools they have available for shaping mortals, any more than dath ilan would try to build a Limited Creation using gradient descent.