I'm partially deaf and I've worn hearing aids since around five years old. I used to think it didn't affect me but as I get older I increasingly suspect it's negatively impacted my life more than I thought. Just the additional difficulty understanding in noisy environments affected my social life and development, and who knows what kind of knock-on effect that's had.
Anyway, any progress in treating similar conditions is great news.
They do say that hearing loss in old age can speed degradation, or maybe it is just correlated.