That video is the same guy from The National Review. His first attempts show Adobe Acrobat optimization can indeed produce image layers. Many of us that work with this stuff know that already.
His latest demo leaves much to be desired. IMHO, either he’s not very good at this or he’s intentionally being less than thorough.
The example he used, the layers were there but all alike with no data or associated groups like in the one released. So he can spin it any way he wants, and I'm not going to be convinced either way.
Maybe you will figure that part out. Maybe it will all become more clear in time.
When I scan into Photoshop, it's a far simpler process, one layer. Then I can build on it if I choose to, add the other security paper layer and tweak it any way I want. But not layers that get scanned in using that method and come out looking like that, don't see any point in it for this purpose or the new image he's got on the NR website, a colored magazine cover. Apples and oranges to me.