I think the trouble is that they're always looking for the perfect circumstances, the very best chances at the very best outcomes (completely understandably), but life just isn't like that, it's all about weighing risks.
I had children mid-30s, which is on the edge of the cliff of risk - I'm also rather fat, but then again I do eat healthily, but then again I drank during pregnancy and ate runny eggs, but then I don't have any exposure to farm animals or pets, I don't wash my apples, but I also don't eat bagged salad, I didn't drive very much, I sat down for my work, but I did weight training at the gym and always ate my veggies.
The medics look at populations, not individuals, and this article is picking on the age of the woman as an issue. I've read them about the age of the father (it does have health implications), and I've read about them on various other related topics, I don't think this is necessarily victimising in itself, the problem comes when people use it as a stick to bash uppity career women.