The nihilistic side of veganism

I fed our son only soy milk formula the first few months of his life (we’re not vegans but we were concerned about milk allergies which run in my family) and our son gained weight just fine. It was not that they only fed their child soy milk. Perhaps they fed him soy milk and not soy milk formula so he was lacking nutrients??? There was either some health problem or they didn’t feed him enough. If they had taken him to the doctor for his one week and one month check ups, the problem probably could have been corrected. It is a very sad case. There must be more to the story then that for them tohave been charged with murder which means the prosecutor proved intent to do harm not just extremely poor parenting skills.