That post, along with his BBC interview video, shows Wright to have a very dislikeable and at the same time needy personality.
He's seemingly self-absorbed, bitter, internally contradictory (continuously publicly proclaiming that he wants privacy). Such a disposition is no way consistent with a person who would have compiled bitcoin's first whitepaper and engaged the more than two year follow-up efforts.
In other words, it makes no sense that he seems to want to go to such efforts to show that he's Satoshi (in spite of his claims that he was supposedly forced into such a position because he is concerned about the privacy of his staff, etc etc). If you really want privacy, just say you are not Satoshi and you made it all up, and you would be more believable... This whole thing makes little to no sense, except for the conclusion that he is a fraud because he appears to be trying too hard.