You say "good memory," but there's no evidence of it. The post said "recognized him," though there's a bit of priming (A NEWSWEEK COVER STORY!) to encourage that process along: https://news.ycombinator.com/item?id=7354326
Memory is highly fallible. Eyewitness accounts are highly unreliable even after a shorter period of time than three years. The burden of proof is properly on the Dorian == Satoshi folks.