One of the interesting things about Korea is that most people with disabilities are rarely seen in society. A lot of elderly and people with disabilities live in the shigol/countryside because many of the cities cannot entirely accommodate people with major disabilities. If such people do exist in the cities, they probably remain at home.
I hope that what this article says is true and that it will encourage other companies to in the future hire more people with visible differences whether or not they may be physical disabilities. A physical disability does not constitute a mental disability. Plenty of elderly people lose control of their bodies before their minds. (Although quite a bit do lose their minds before their bodies.) People with muscular diseases may have trouble walking or speaking, but can perform with IQs much greater than the average person. For example,look at Stephen Hawking, and English physicist who lived with ALS, a motor neuron disease. He is a very well known scientist that served as a professor in some of the best universities as well as traveled the world speaking about his work.