Have you become secularized?
Not a Catholic, skimmed the article.
What's wrong with IVF if only, say, 3 embryos are made at a time and they're all implanted?
If you conceive naturally, there's no guarantee that you'll have a baby 9 months later. Sometimes things go wrong.
If you implant 3 embryos, chances are at least one of them will "take." Maybe all 3 will :) Either way, you're not freezing them for years at a time only to have them destroyed down the road.