Satoshi did a lot of off-forum communication, some of which a lot of us still have in archive. I did contact the author of this article and gave them some clues to check for to see if it is really him. So far, no response, but no surprise after all these years, people have published many stories about finding the real Satoshi. I contact them, offer up some useful info not available on the Internet and usually the investigation falls through as the supposed Satoshi can't answer any questions from the past about interactions with other members here. The real Satoshi could contact any of us directly with a "I'm alive" message if he wanted to, that would clear up confusion quickly.