Gonna stop you there. It's actually very relevant whether or not what Fatman is doing constitutes a leak or not. Your claim is that Fatman is leaking information whilst calling it all speculation. The definition of a leak is vital in determining whether or not your claim is true.
Not true. According to SmashWiki, the definition of a Leak is as follows:
"A leak is a revelation of information about a game that has been released prematurely, especially without prior permission to release such information."
Thus, a "Leaker" would be an individual who reveals infomation about a game that has been released prematurely, especially without prior permission to release such information. If the information you are discussing cannot be conclusively proven to be true, then it is not a leak, it is a rumor, and you are not a leaker, you are merely discussing rumors, ie. a speculator.
Because your idea of what a leaker is does not reflect the reality of what a leaker actually is. You are saying that because Fatman is discussing insider information that he is a leaker, but if that were true then you would also have to call the likes of PapaGenos, IAmShifty, LaxChris, and BlockContent as leakers as well, since they also have recieved and discussed information that they claim is from insider sources that no one else has, and I know you wouldn't consider LaxChris a leaker.