Is this something I should be worried about?

My giveaway ended today and I was getting ready to send the key when I noticed the user's email has "steambot" in it. He's been on Steam for over two years yet has no profile picture, only one friend, and has only played 6 out of 340 of his games.
I added the person on his friends list and he said that the winner of my giveaway is his friend in real life and that he plays his games in offline mode, which is why his games don't have any play time. The games that do have time recorded are multiplayer games. When I asked him about the email thing he said " he doesn't want his primary email associated with his steam account for some reason." His response for the friends list thing was " he's not interested in the friends system for people he doesn't know." You would think he knows at least one other person in real life who uses Steam, but maybe not. I get not wanting your main email on his Steam account, but why put steambot in the one you use? Both of these people seem to have different libraries and are in mostly different groups. Also, the person on the winner's friends list was not entered in my giveaway.
This whole situation is pretty sketchy for me, so I would like to know what you guys think and what you would do.