I don't deny that those sources are credible. Those people have a reputation so more credit is given obviously. Also, I never said this video is real or fake. I'm saying that its reasonable to believe in its legitimacy. There's no evidence that pointing to any form of fraud. It's pretty thorough, but yes, it can be more thorough as to eliminate any doubt. With that in mind, I don't think anyone can pass judgement of its validity. I'm simply pointing out the lack of evidence in the arguments pointing out of that its fake when it's purely based on assumptions and speculative. To say with certainty that either real or fake is foolish. Rather than making personal attacks, I'm just keeping it objective by pointing out the flaws in logic from doubters by playing devil's advocate.
I never knew iFBA was open source. True, the creator could've simply rewrote it a little and recompiled and signed it off as a developer. Ultimately, the application would still install in the user directory. No matter what's done to it, even if the icon is transparent, and even if its set as a pre-rendered icon in the plist. It'll still show up with a black square icon mask on the springboard. You can reskin the icon mask with Winterboard or you can simply edit the icon mask images in the System/Library/CoreServices/SpringBoard.app folder. Either method would still require root access that a jailbreak gives. Yet, two icons (iFBA and AirServer) are transparent that only System level applications can have on a non-jailbroken phone.
Ultimately, can't say with certainty it's real, but there's a lot of reason to believe that. Can't say its fake either cause I see no evidence of such. In the end I'm just trying to get people, to put loosely, keep it real. There's a lot of fakes out there, but you should ls still maintain a stance between skeptism and being naive.
Personally though, it seems real, but probably using a developer's exploit. I kinda doubt that the creator will find something that is releasable to the public. Even then, it's admitted in the description that there are "issues"...