One key point from that article was that the new transforms the old. What's old is sex selection. What's new is the combination of ease, safety, and privacy with which you can now do it.
This is a fundamental dynamic between technology and culture: Technology can coax cultures one way or the other by making it easier to do what you want to do, with less difficulty and without other people knowing about it Technology can facilitate regression as easily as it facilitates progress. But if you think of yourself as a pro-life conservative, the data should humble you, too. In the populations in which it has increased, sex selection isn't a newfangled perversion. It's a custom, and a patriarchal one at that. If the sex-selection story teaches us all to be a bit more skeptical of both tradition and technology, that'll be real progress.