This honestly doesn't sound very empathetic toward patients. Many of these people had fine hearing and then lost it. They've already "learned" how to hear and they reasonably expect the hearing aid to help restore it.

In your analogy, it would be like if my vision got worse and I got eyeglasses which partially restored it, but mirrored everything upside down with tons of static. Now I've got to learn to read upside down and tune out the static, but don't worry because I get 10 free lessons with a reading instructor. Oh and none of this was clearly explained to me or part of my expectation when buying glasses.