Are Down syndrome people "less than" others?

"In the reporter's enthusiasm, she downplays a major effect the availability of this test would produce; namely, the destruction of more unborn children who are found to have Down's. Indeed, the whole spin of the story further de-humanizes people with Down's, increasing their marginalization and, quite literally, their endangerment."
http://vitalsignsblog.blogspot.com/2010/07/are-downs-syndrome-people-less-than.html