All these strange professions always wave the fact that they are registered in my face. It means nothing to me. I don't care if my nurse is registered or not. I can't tell the difference. This is a bit of a tongue in cheek app.
You sign in with Github to prove that you are a developer. It also means I don't have to make you fill out a CAPTCHA or ask you for your email. I ask for the lowest permission (read your public stuff), so don't worry about my trying to do harm to your Github account.