Suppose they didn’t have to be miniature. Suppose they were permitted to cover the entire ears and surrounding territory. One assumes they could then be better and cheaper. So why not?
We are ashamed of disabilities. Hearing loss is not usually acquired venereally, but the stigma is there. People would know!!! Of course in my case they could find out by speaking softly. And the perceptive ones would adjust.
I’m a nerd; I would cheerfully sacrifice appearance to function, and I would love hearing aids that did that. And I’d get them in bright colors.