To try and gently prod people into paying? Or because a lot of people don't know about or use the reader button. Or a lot of people don't have iPhones or are on

To try and gently prod people into paying? Or because a lot of people don't know about or use the reader button. Or a lot of people don't have iPhones or are on their computer? I do have an iPhone and do use the reader feature, but actually never thought to try it with nytimes articles before.