Hmm, I see. Personally, it seems weird that you'd get bonus trust for curing conditions, something that's mandatory to do to cure a patient. Making them rewards for fulfilling requests makes a lot of sense, though!
Also, I don't know if this is actually a bug, but after buying the clothed chest grope, I never had it show up as a request or condition treatment a single time. Might've just gotten unlucky, though. And speaking of conditions, I feel like it would make sense if each condition had a unique action to cure it. So, bleed would always be cured with thigh rub, for example. That would give you more of a gameplay incentive to unlock the different actions, and make the nsfw feel more tied into the gameplay itself.