Using the former verbiage implies that members of the Blind and Deaf community are “imperfect” and therefore cannot serve as valuable, functioning members of society. This cannot be farther from the case. They are not “lacking”, they simply perceive the world differently, and therefore we should treat them as such - human beings just like us, who just take in the world a different way. With decency and respect.
Great, more pointless words to be careful about. Have you run this by any blind or deaf people? Do they care in the slightest about this? I’d imagine most wouldn’t give two shits which you used as long as you’re not being a dick about it