Is this feature going to be annoying as hell? Yes. Is facebook doing it anyway? Yes. Why? Well, two reasons. One is, because Snapchat does something like it and they *have to* copy snapchat. Two is, they want you to send more messages, more than you have any interest in sending, because they want to demand and then monetize all of your attention. If you value your time and your attention, you should be angry.