This is probably the single, most succinct and accurate summation of the whole "stem cell research question" I have seen anywhere. An excellent article.
Specifically, his claims that ESC research has gone nowhere is probably false. That's unfortunate, because in making the claim that ESC's don't work, he has basically given up the moral argument in favor of a utilitarian one. Once you've done that, you've lost the war -- the first successful use of ESCs destroys the opposition.
The reason to oppose ESC research is that it is wrong. If Kellmeyer had left it at that, he'd have been OK. Once you've given that up, it's extremely difficult to get back on track.
Abortion provides a good analogy. The abortion industry thrives, and is primarily defended, on utilitarian grounds (primarily variants on "convenience of the mother"). The moral argument was lost long ago when convenience was placed ahead of a moral principle. These days, the pro-life side typically argues on utilitarian grounds, primarily the consequences that may befall a woman who has an abortion. It's rare that you hear the public argument broken down into a dissection of the moral implications.