Whoa, that article is full of poop. Even with a fantastically producing egg donor, no one gets 20 viable embryos. First off, all reproductive endocrinologists know the dosages of fertility meds well enough to achieve 6- 20 EGGS (like the eggs you had this morning or the sperm wasted by all men, eggs are not people) for fertilization. Too many and they will be unripe follicles. Aiming for 6-10 good ripe ones is the goal. We will get to embryos later.
Ok, so I’ve been personally involved in testing the best, young 20s, proven egg donors’ eggs. on average, these paragons of fertility had only 50% euploid eggs. Eggs that were chromosomally correct in order to make a human. Aneuploid eggs pretty nearly always either don’t fertilize or fertilize and don’t grow. It’s the biggest cause of early miscarriage.
Then the eggs are fertilized with the sperm, and sometimes these eggs undergo genetic testing before implantation in the uterus. When that happens, testing will show again, 30-70% bad embryos, even from young donors or parents. The older the mom, the greater the %age of bad embryos.
It is untrue that 20 good embryos die for one IVF child to be born. Often, the couple will try a cycle of IVF, with maybe three transfers of up to two embryos, and still not get pregnant. There is a reason why they sought IVF. Often, egg quality is not good.
Also, see my previous post in this thread for a good look at an unwanted embryo! My beautiful daughter.