The work done on disability by most bioethicists breeds contempt for disabled people and fosters condescending, dismissive and patronizing responses to their testimonials and subjective accounts about their own lives. Imagine what it is like to be a disabled undergraduate or graduate student trying to endure a semester of lectures in which you are given the message that your life is not worth living and should be prevented, that you are deluding yourself about the quality of your own life and the extent of your misfortune. I often wonder why more feminist philosophers are not protesting the fact that this blatant bigotry and prejudice is being written and taught in their departments.
I really detest these sorts of politicized anti-academic complaints. For the sake of the truth, intellectuals must be free to pursue lines of inquiry that some may find offensive. We grant academic freedom because we recognize that this is important, and beneficial in the long run. So if you want to criticize academic work, you should appeal to truth-indicative considerations, i.e. evidence that the claim being made is false or groundless, not sanctimonious moralizing about how "offensive" it is to assert some claims (whether they be true or not).
In this case, surely nobody really denies that a disabled life may well be worth living. But it is an interesting philosophical question whether disabilities in future generations ought to be prevented (through genetic screening and the like). It's an important moral question, and one we should want to learn the truth about. Hence the need for free inquiry. Prima facie, I would think there's a reasonable case to be made for screening out disabilities. If that's true, it can hardly be "bigotry" or "prejudice" to say so. To bandy about such accusations just seems intellectually dishonest -- an attempt to use the moral high ground to bully one's interlocutors into submission without doing the hard work of actually arguing against their position. Most distasteful.
It's a strange mindset - and one which has no place in academia - that would have us respond to philosophical opponents with "protests" rather than counterarguments.