There's another article somewhere on FR about hospitals testing infants for twenty six different diseases. I think I can decide what's best for my children to eat not some scientist with an axe to grind.
You should read some of the medical literature or related news stories about children who were kept on these diets, particularly if they were also born to a mother who was on a vegan diet while pregnant. These kids get severe neurological damage, which is only partially reversible upon taking up a healthy diet. Making a child eat a vegan-only diet is just as damaging as feeding a child so little that they barely stay alive and don't grow to their normal size. Everybody is horrified when we see a news story about a 4-foot-something teenager who weighs only 50-60 pounds due to starvation by wacko parents. Why the defense of wacko parents who do similar harm by imposing a vegan diet?