I didn't say that the parents did stop using sign, but that the child refused to do so, it wanted to rely on speech alone.
Becoming a part of the Deaf community can be "long and hard" for some hard of hearing people, and some never makes it. I don't know why you never heard of it?
My point is that some deaf people feel unlucky they was implanted, and refuse to use CI anymore. Not all children are the same.
