Mostly because the brain is the architect. The cochlear implant only provide electrical stimulis and the brain do the translation. And when we are young, our brain will create faster neural connection. (But i’m not sure, i don’t know how the brain evolve though age)
They can but in France their writting skill and understanding complex sentence are below average.
Why ? Because we lack bilingual school. If we had teachers teaching french and sign language, we wouldn’t have to translate everything in sign language.
Lastly, i believe that some Deaf refuse text as it represent a form of oppression culture. But i’m not sure about it. that’s my feelings as I’m often blamed for my long text when i write to them which is not the case with earing one. Maybe they are too long.
However, there were ton of articles about french election but they wanted a sign language version…so i dunno.