To be fair though a huge difference is that the deaf community is bound together by a common language. Language is hugely important in human social groups. A "free fix" for members of this community comes at the cost of the eventual annihilation of their shared language. This is why you typically don't see the same reaction from medical advancements in vision from the blind community, whose impairment has no effect whatsoever on their primary language (and just to be clear Braille is simply a character mapping to the readers native language while sign languages such as ASL are actually distinct languages).