Even if those guitars had a massive design flaw that made them unplayable, it makes no sense to not scavenge the tuners/pickups/knobs, etc off of them.
I very much agree.
I will share though, back in the 2007 (I think) when they reissued the Gibson RD in Silverburst, I ordered one with a Musician's Friend 20% coupon.
Played well with a set up, I really liked it, so I bought a second one on Zzounds. When I got the second one, I had it set up and the luthier called me to tell me that he could not get the guitar out of backbow. The cause - the frets slots were not cut wide enough so when the frets were inserted the pushed the neck into backbow. You simply could not set it up to be playable.
So I returned it to Zzounds and they sent me another one. I got it....brought it to the luthier...same exact issue. This luthier had worked on a ton of my guitars (including my 70s Gibson RDs), and he knows what he was doing.
I called Zzounds, sent it back and asked that they have someone put a straight edge on the fret board to see for themselves. I also wanted them to put a straight edge on the fret boards of any others they had in stock, so they could find me one that was playable.
They called me back and said - well, we check yours (and some others) and we'd like to sell you something other than that guitar.
Which means - they were all junk.
The first one I got from Musician's Friend was 'ok', but I sold it a couple years later anyway.
Moral - to fix those RDs, they would have had to de-fret...widen the slots...re-fret. Probably too much work, and would mean a loss for them.
I'm guessing those guitars in the video were a similar story (just my guess). But no reason you couldn't salvage parts or donate them (if they were close to playable for a beginner).