I have never seen a midget backpacking.
I have guided a blind person to the top of a peak in the winter. having all the rocks and sticks covered by snow, in a fairly uniform and wind crusted way, made it a bit easier, and she said she had a good time. We had crampons so her grip on the snow was secure, and she had an ice ax to use for support. In those days the ice axes were long enough to be used as a walking stick.
Went backpacking with a black guy once, a college student with a summer job at the place where I worked. We headed off from camp to explore some upper benches covered by snow, and he said the trip was a new and novel experience for him. He was a football player from the East coast so it was good that he experienced some wilderness.
Saw a paraplegic lady on a backpack once. She wasn't carrying a pack, but was self ambulatory by scooting on her butt with her hands. Where was she? At the top of Asgard Pass in the Enchantments of Washington's Stuart Range, 8 miles from the trailhead. She and her party were starting the 1800' descent on a rocky trail to Colchuck lake. That is not an easy walk from any direction.