That is even sicker than the Downs excuse. The only equal to this level of sickness would be aborting a little girl because she wanted a boy.
Babies are gifts from God, not some "Build-a-Bear" convenience to get exactly what you want!
But I suppose if you accept the liberal notion that government is God and political power is the means to get whatever you want, this sort of sick thinking is an inevitable consequence.
I was born with a club foot (they were able to fix it). I imagine some babies are aborted for that now. And less.