Not to be nit picky but this isn't a cure, but a treatment.The problem with this treatment is that any suggestion of a cure sounds too good to be true, so of course people will be doubting it. All we've ever been told about tinnitus is that you have to 'live with it', and our best outcome is that we'll stop being bothered by it.
Even if this treatment isn't yet effective for everyone it looks like a real big step in the right direction, and I really believe that in years to come people will look back and be shocked that we used to have to live with tinnitus.