Anytime someone imitates another person's argument with hyperbole, all caps and exclamation points, I weep. My point doesn't boil down to you're making assumptions so you must be wrong. My point boils down to you're making assumptions based off absolutely nothing so you're argument isn't sound.
I see you're not above making assumptions either:
That's nice, because none of that was in your post. I think it was more you couldn't follow the logic.
And you know this how? There are two possibilities. He is either lying or he isn't. Nothing he has said or done has been any sort of definitive proof that he's lying. Quite the opposite actually.
Just because everyone wanted Little Mac means nothing. We know Sakurai is an odd fellow. A good amount of people wanted Little Mac last time and it didn't happen. Heck most people want Snake cut, but just because people want it doesn't mean it will happen. Everyone thought the Brawl leak was fake because Mewtwo was cut and ROB was in. Everyone thought it was fake. What everyone thinks about a character getting into Smash Bros means nothing. I can give you plenty of instances where characters that we would assume were sure things, actually weren't so sure. How many people freaked out again over Toon Link being revealed because they thought he should be cut?
I actually did attack his argument. If he attacked the guy's legitimacy or any real inconsistencies then yeah, he'd have a point. But nothing he has said has been inconsistent.
Of course there is no "definitive" proof that he's lying. What are we going to do? Strap him to a lie detector so we can see if he was telling the truth or not? The issues is that he made a prediction on a forum, then all of a sudden "I HAD A SOURCE THE WHOLE TIME GUYS. HONEST!" He claimed that the characters would be at E3 and then he said "NO, NINTENDO MUST HAVE PUSHED IT BACK." Now we are over 8 months deep and the next character was Rosalina (not even on the list_ and Little Mac, which everyone expected (yes, really popular characters get in. Do you think Sakurai threw a dart to pick Megaman?).
The stage disproves the leak because it shows that the intention was to always show Mac at a latter date. The Wii Fit and Megaman stages were never shown off until those character's trailers but the Punch-Out stage was there for everyone to see before any newcomer was really shown. It has since been decked out with Punch-Out stuff suggestion that stage was reworked. Sakurai wasn't going to show the stage and Mac all covered with "Smash," or even change the stage to Smash just so they don't have to show Little Mac then. It shows there was never a change of plan and that the intention was never to show off Mac at E3. This kills the rumor because the guy said he had info on the E3 reveals and the characters were to be at E3. The idea that the reveal was moved back doesn't make much sense.
With most rumors, there is skepticism. They are always questioned. With this one, it is taken on face value and nothing else. Even with more and more evidence that he never really knew anything. It is beleived by Pac-man supporters as one shot that their character might make it. It is believed by others as their mind cant fathom how he could have just gotten it right. People who believe this have had to jump though more and more hoops to have it fit and fall back on "How did he know WFT." At the same time, the major this that disproves it, the lack of an E3 reveal, is rationalized away or ignored. There is defiantly a double standard here.