[gizmo]

This isn't about toddlers and nobody here has argued that the parent who parents least parents best.

The list of things that are conceivably harmful to a child or teenager is practically infinite. It includes almost all sports, most hobbies, travel, and most food and drink. If you're going to ban everything that might be harmful of out an abundance of caution you will do tremendous harm to your kid. Yes, a smartphone might harm your kid but so might the absence of a smartphone. That's why it's good to look at the actions of other dedicated and thoughtful parents. If they all decide to give their kid a smartphone despite the known downsides it's not neglect, but the result of a thoughtful evaluation of the pros and cons. Demanding that a smartphone must be proven safe (impossible) is an absurd standard of evidence you don't apply to other areas of your life.