If he had inside information, he would have gotten the name right.Side note, I don't understand what the bug up the skeptics' arses is about Villager not specifically being referred to as Villager when 'Animal Crossing Boy' is about as close a description of him as you can get,
He never knew anything. People believe this also don't believe in coincidences. The rumor exist only on the notion that he HAD to know something. When leaks happen, they know specific information that would be hard to just guess, and no, characters don't count. One Brawl leaker stated there was a Dragoon item and described how it worked. When the item was unveiled and it was just how he stated, it proved him right. This guy didn't have any information besides character names, one of which he got wrong. So there is no information that is specific/. It's just as likely that he guessed. This is further supported when you consider the fact that he never announced he had insider information until after WFT was shown. Before then, he made a forum post that said "My unlikely prediction." Leakers show their information before it is revealed. Given, it's already been proven wrong with no E3 reveals. You don't just get something like this wrong. It's a pretty big fact. So he already isn't right on quite a bit. This is only believed because "There is just no way he could have guessed it." With thousands of people making rosters and guessing characters, someone had to get something write. Even still, he's only 50/50.