ultimately we oughta think about what we are referring to. if we are talking about a photograph taken by someone, the authenticity is ultimately coming from the combination of the photograph and camera used. so when you think of a genuine photo in this scenario you expect it to be fundamentally taken by the user by a particular camera to create a particular photograph. you can use devices to take a photo without pressing the button, such as a timer, but the photograph and camera are both fundamental to the authenticity of the image. if the camera is no longer entirely involved in the generation of the photograph I would say that it is no longer genuine.
Reference driven as described in the article is more appropriate, but alas it is verbose. normally such pedantry bores me, but in this case it's pretty tantamount to what it is being presented in this case.