I don’t understand. No one is forcing these people to come out and say “hey I’m here for you. If you need anything just let me know. I read and respond to every email / tweet / etc.” If you’re not going to do it, then just keep your mouth shut. You’d look better sitting in your ivory tower. But saying that I’m here for you and then never responding to multiple attempts, makes you look like a complete lying sack of you know what.