> distinct lack from one's natural capabilities in the way that deafness is.

The original commenter wanted to state that deafness can and should be seen as a natural occurrence, instead of a disability, that pushes people to better use other faculties. In the computer analogy, it would be someone who protests the use of computers entirely like for school children, to push them to use other skills.

I have a specific “disability” that I often cannot smell (because of allergies). I have learned to “feel” smell with my fingers running through the air. In such a situation, am I really disabled? Despite how important smell can be especially with spoiled foods? Few would think so. This deaf commenter sees his deafness in the same manner. And sees efforts to broaden people’s senses in the same manner as children being given calculators and computers at an early age.