Why the hell would you show your face to the whole world if you openly admit you are a scammer?

Obviously they got hacked and someone is trying to damage them
Because he can? Hacking all social platforms is not so easy as you think and I highly doubt that someone can hack Telegram accs of all admins in the chat. So they have done it on purpose.
Good point about telegram, as someone wrote, it's probably that he was forced to change his mind.