What I think will happen is this alldeaf will probably have bunch bunch bunch of senior citizen because there's whole bunch of you that's still deaf "purist" (if you considered ha or CI bad thing lol) or special group of CI/ha people that's still sign.
If they actually found a cure for deafness in 40 years later and fda law required all child that's born deaf starting at Jan 1st 2030 to be implanted or faced 5 years in jail but except for those couple illegal deafies come in here and hang out with other illegal deafies
I doubt that because it will cause USA no longer have freedoms for everyone! If that will happen, I'll leave USA.