Yeah, didn't Bell fear deaf people and think they would form some kind of deaf super-race that would render those who could hear extinct or something?

He thought they were broken and needed to be fixed And he wanted to destroy their language and culture. I don't have the full details, and I haven't looked at an unbias view of him since I was in grade school, and even then it was along the line of he made the phone to try to help deaf people.

No. HIs wife and mother were both deaf. It appears he was worried about hereditary deafness becoming more widespread if deaf people were segregated from the hearing population and thus leading to intramarriage amongst deaf people.