There are few things that make me angrier than trying to hold back cures for deafness because of "cultural erasure" or whatever the phrasing is. It is utterly reprehensible. To try to keep someone disabled (yes - disabled, not "differently abled", they are objectively lacking a capability that a healthy human has) just so that there are more people in your community is objectively evil in my book. It is directly doing harm to people for one's own benefit.
If a person wishes to not get a certain treatment - fine, that's their right. But when one starts trying to keep others down, that's not ok.
If a person wishes to not get a certain treatment - fine, that's their right. But when one starts trying to keep others down, that's not ok.