Actually not stupid at all if he is passing on terrorist information to other terrorists or he is a spy passing on secret intelligence. It works this way: 1) Encode and embed information in an innocent looking file (jpg, ebook, etc) 2) Upload file to ebay, DP, reddit, or other platform 3) Give contact the link 4) As soon as contact downloads the file, delete it 5) Contact decodes the secret information Note that his original post was active for exactly 19 minutes before he deleted it. For all we know, he could be a Chinese spy passing on accumulated intelligence to China.
Except that the post history shows he was just trying to get people to email him. Although that might have been part of it too, I guess. In the meantime, I do love it when email addresses and usernames don't match - especially after they've given way too much information in their username.