OP has a muddy and blurred understanding of Texas law, which means gleaning any meaning from the original post is subject to individual interpretation, and we have seen the results of that in the responses.
There is a kernel of a valid question in the OP--which is, "Where can less-able people find instruction in self defense?"
Being less-able encompasses a wide range of time frames and conditions. A person with a broken leg is less-able, and their ability is further limited by being in an immediate and present learning curve for coping with mobility devices. Something an amputee, for instance, might be more experienced with. Both are less-able, both have legitimate needs for very specific instruction.
A person missing an eye has depth perception issues, so does a person recovering from eye surgery. People who are deaf or mute as also less-able, too. And they have some specific training needs.
Our modern world expects us, each and every one, to fend for ourselves, which means we all go out into a potentially hostile world.
I don't have a ready answer; but, I'm certain one is required.
