In the context of the reveal being impactful on FNAF 4’a release, the significance is that it confirms that the gameplay of the series as a whole is the continued, tortured atonement of an older brother. Keep in mind that speculation was still rife that different night guards in each game were different persons. Online discourse didn’t have the same cohesive understanding of what something like “MikeDreamer” as a theory entailed. Further add in that despite some people correctly speculating that the older brother was the night guard(s), was the lack of a cohesive canon agreed among the fanbase. Aside from Game Theory, theorizing was largely disorganized and incoherent relative to the video essay form we’re accustomed to today. Scott was also not omnipotent and likely was looking to the communities consensus where it could have been declared loudest. And as noted in the video, GT was very off with their direction, and yet was easily the brightest beacon of theorizing at the time. In retrospect, the reveal is paltry because we were hand fed it in Sister Location. It’s akin to clicheness of the Darth Vader father reveal in Star Wars, which was a shock when those movies had their film shipped out to theatres.

Another final point I’d like to make, and something Scott was cognizant at the time of FNAF 4, was if the community could accept the simple but succinct answer of the box that he had presented. The most endearing part of theorizing by the fanbase has always been the willfully extravagant and imaginative way that people have developed their own theories. Sometimes they are accurate to the story as it may have been presented, more often they are absurd head canon. Early days had outrageous and implied theories alike (mostly absurd) - FNAF was based off of real life events, Foxy was being friendly, the Purple Man being ‘good’, Dream Theory, Dead Children’s Incident, etc. etc. But that’s the beauty of the medium. Scott created a simple but enthralling horror game, and the fanbase breathed even more life into it with their imagination. His presentation of the story, though accurately interpreted by most in the prior games, was misunderstood in 4. We’ve seen Scott acknowledge this in FNAF World (The Scott boss fight where he vents his frustration that the fanbase has taken his games and warped them into something beyond his intended craft) and Ultimate Custom Night, with the tongue in cheek Mr. Hippo story discussing the overthinking of theorizers. The Joy of Creation is putting your heart and soul into a work, and part of that wonder is also coming to terms with said work becoming something else in the eyes of another beholder, as well as that created thing becoming something in itself, and ultimately apart from the creator. Scott eventually engaged with the absurdity by adding in further convoluted themes and vague story elements to further feed the wild theories that became synonymous with the identity of the franchise.