Entity is copy but ChildOf isn't?

[CorneliusCornbread]

Really just what the title says, ChildOf is a simple tuple struct containing a Entity to represent that parent entity... and nothing else? Why not simply make ChildOf copy as well? At the current moment it just serves to make parenting something to the same entity as another more verbose for no reason

fn parenting(mut commands: Commands, query: Query<(Entity, &ChildOf)>)  {
    for entity_bundle in query {
        let (entity, parent) = entity_bundle;
        
        let spawn_bundle = (ChildOf(parent.0));
        // This would be better with copy
        let spawn_bundle = (parent);
        // You could also do clone in theory currently
        let spawn_bundle = (parent.clone());
        // ... but at that rate, why not just implement copy if it's a single value tuple struct of an item that already implements copy?

        commands.entity(entity).despawn();
        commands.spawn(spawn_bundle);
    }
}