Thank you for your questions. To respond, people who are deaf or mute are still people and I don't care about whether someone is superior or inferior if it's in some other way. However, if a human is so brain damaged or antisocial that they will never talk or write or sign with another human being then their beliefs don't deserve respect.
I notice that you decided to start bringing up how other animals have intelligence and emotion, but I'm not sure why. Were you responding to something I said?