It's great that there are these, I dunno, maniacs let's call them seeking out (popular) culture and archiving it like pre-internet Versions for us. Hardly surprising the people who dig so deep into things go a little mad.
Reminds me of this thing I saw recently about, arguably, a modern take on this kind of discovery. I found it fascinating and doesn't really belong anywhere so I'll mention it here, it pertains to the US pilot of Peep Show. Well there was a pilot that you can see on YouTube and it is famously disastrous and as a result the show never got made. But it turns out a few years later there was another pilot made but just to show to executives, never screened. And it was actually overseen by the guys who made the original show, so it clearly had more potential than the other one. But noone really knows cos you can't see it....
But you can see bits of it, and that's cos this Peep Show obsessive heard about it and started to investigate. From knowing the writers he got to the producers and from there he somehow got hold of a list of the actors in the pilot - mostly unknowns. And basically he sought out every actor and found their websites and went through their show reels hoping that - as they hadn't done loads of more famous stuff - some might have included clips from the unshown pilot. It turns out that they did, and this nutter was able to collect a few bits of footage and work out which UK episode it was based on and then edit the bits he had together into the right order to create a sort of excerpt of the second pilot.
So hearing this guy explaining all that was crazy, but really he could do it all from his bedroom, his predecessors who were folk-music obsessives had to travel to nameless villages that appeared on no map, traverse muddy lanes and knock on countless doors - mostly to no end. True nutters and I for one am very glad for their existence despite their tendency to go a bit... wrong, rip people off and denigrate those who don't share their purity of vision