What you are describing is essentially an urban legend. Parents are not being investigated for letting kids bike around.
Also, the most common source of child abuse is a family member, which unfortunately is a common reason for CPS to get involved.
Also, the most common source of child abuse is a family member, which unfortunately is a common reason for CPS to get involved.
Of course the genius is the kidnappers seal most these cases so their relatives can gaslight you about what happened, which is the icing on the cake.