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?
My theory is you should eat whatever tastes good to you, I would think we all have a built in self protection mechanism to stay away from food that is harmful to you. If you get sick after eating something, stay away from it !
I am not defending people who don't know how to meal plan,etc. Don't try to make me out to be doing something I never said.