Mom to two kids with Autism spectrum disorders. If you aren't a scientist researching ADHD or Autism and you dont have a child with either condition you dont have a right to judge the parents who do or comment on articles on the condition or research done on the condition. You lack the REQUIRED experience and knowledge of the condition to make anything close to an educated comment.
If your "scientific" opinion isn't backed up by peer reviewed and published research it isn't scientific or valid.