So what? Two chldren are dead. Adults expect competence from other adults charged with the responsibiity for infants and children. If he had run over two complete stranger children with his car by accident, he would have been charged with manslaugher.
Consumer reports also have articles on ‘How and why” these happenings 0ccur... as do plenty of others who have investigated and researched why this happens who also agree with that article......