This program isn't doing steganography or encryption of any kind. Encryption means you want to send something to someone you don't know who has a special key to understand it. The goal here is to send something to someone you don't know who doesn't have any advantages at all over the people you don't want to receive the text. So it's like a CAPTCHA for censors to fill out - a way to make it harder for a machine to tell tens of thousands of people what information they're allowed to pass on.