The problem is that they don't allow their kids to cheat. That's child abuse.
Not allowing kids to eat meat = child abuse
Slaughtering animals = humane treatment, totally not animal abuse, see that only applies to dogs and cats
It is child abuse if you force a poor vegan diet on them which causes them to have retarded neurological development.
Your children could be taken into care if you cause malnutrition.
As you threw a PubMed.gov link at me which you believe here is one for you.
https://pubmed.ncbi.nlm.nih.gov/31991425/and BMJ
https://adc.bmj.com/content/77/2/137No more of this there are other forums you can go to discuss fad diets
Meantime I'm poor again BTC - USD only up 15X since Mar 2020