If you ask me, this guy is a troll. I don't think he actually wants to get people to believe he is satoshi. I think he is looking for attention. I suggest that you not give him any attention.
The attention will not be given because in Bitcoin discussion board many people has come up with such idea that they are satoshi and it raise many discussion. Actually many of them maybe fake but if Satoshi should come now nobody will believe that it's the real Satoshi, because of alot of people impersonating with Satoshi. And for someone to believe Except it's the people who meant Satoshi when he is in the forum will know his writing style to be believe that it's a real Satoshi.