Yes, but the question is WHY they want the cure. Is it b/c they haven't mentally come to terms with and accepted their disabilty as just another difference? I actually had surgery as a teen that would have turned me physically hearing (atresia repair) At the time I totally thought I wanted it. But luckily it failed. I now look back and realize that I simply hadn't come to terms with the fact that I was disabled, and disabilty is just another difference.
Again, I can TOTALLY see how someone with a late deaf loss would want to be cured. And I support research for cures in that area 100%