Is having children at an older age (thirties into forties) a feminist triumph?

I was forty when my daughter was born. My wife was thirtynine. According to this article, we are visiting a host of ills on our kids. They were more likely to get genetic defects. We can’t run around with them. We’ll be too old to have much to do with our grandchildren.

Now, in my case, we had no choice. We’d be childless without modern fertility techniques. But many women have careers first, and then kids. Is this a good thing? What are the pros and cons?