Hearing aids are not meant to sound "great", they are designed to aid in hearing (you know, it is in their name).I'm not convinced of your comment about "uber expensive" hearing aids, unless you're referring to the ones that are implanted next to the eardrum at an audiologist's office. Not very convenient if one has a problem. And by being uber expensive, for most people they're irrelevant.
I've compared AirPods Pro to $2K hearing aids and the AirPods Pro win by a mile in terms of natural sound. Expensive hearing aids are continually processing audio, which makes them sound unnatural and totally messes with spatial localization of environmental sounds. Even in "music" mode, the $2K hearing aids I've tried sound tinny.
When you need hearing aids, it means that the spectrum of sound where speech is located has dropped so low that it can be hard to participate in conversations. It is quite understandable that hearing aids would amplify those exact frequencies that human voices occupy, since it is what will make you hear other people.
For people without hearing impairment, hearing aids will sound horrible as they will amplify a part of the spectrum a person with normal hearing does not need amplified, actually, it is the spectrum that your ears usually are _most_ sensitive to, so it will sound extra horrible.