now i feel like an idiot.
Why the hell would someone post something fake and say it was real?
Same way it happened the first time the link to this video was posted on F.R.
Website owners (not F.R.) sell advertising space to make money. That space is often made up of links to video of cats, or THE 25 CRAZIEST (any noun here will do), or videos just like the one this thread is about. People click on the link, go the the link, watch the video, then.... put it on FR because it's 'cool'. The website owners (their advertisers actually) change up this 'links' to keep people's interest. Eventually, they recycle those links. So, it's because this video is now in 'popular' use as LINK-CLICK BAIT.
P.S. This one (per the FR POSTER) came from an email.
So someone else saw it, told them it was real, and then they posted it here.
You would be surprised how often something like this happens, over the years.