He was making much the same point, at least before the post was flagged... the point being that we must take these perhaps unpleasant facts into account when making social policy, rather than maintaining elaborate fictions that force us to disregard reality in favour of expediency.
And as far as I'm aware, we don't place people with Down syndrome into ghettoes, nor do we harbour illusions that with the right environment they will all be future neurosurgeons...