When I end up needing hearing aids, I intend to roll my own signal remapping via Bluetooth. Latency will be a thing, it will be worse than state of the art, but I can adjust and fix it.
My capacity to do that is rare, and it is not a public health solution.
A bill of bodily autonomy with prosthetics (no subscriptions, no self destruct or planned shutdown) and right to repair prosthetics seems like the path for the future.