As a parent of a child with significant disabilities, I have a little extra 'love' for people like him. As was noted above, his time with this child is not a photo op. He walks with walk with his sister. From afar, he seems like a wonderful human being. Nothing but respect and well wishes.
It sounds as if his greatest achievements have been, and will always be, off the football field. Considering he's one of the athletes that surpasses the lottery odds and makes it to the professional level... that's no small compliment.