Ohara scholars barely figured out a powerful kingdom with advanced technology existed in the past after reading everything. I don't get why we're acting like VP was handed over the literal blueprints of Ancient Kingdom's technology. For all we know, the information in the books could be as basic as "Gaint robots with the ability to defy gravity existed in that Kingdome, and objects can be turned into devil's fruit users."
VP probably took inspiration from it and figured out a way to defy gravity and made inanimate objects into devil's fruit users all on his own. Bear in mind, VP discovered the blueprint for life even before Ohara. It's with this technology that he used to replicate Kaido's devil's fruit.