No fam, it's not a case of 'moving parts' as there are none really - just overlays and panels that have to be (manually) stitched or just simply take more time to manufacture due to a more involved process.
Less complex shoes like the ones Nike has been making for a few years now allow for a quick turnaround (necessary) for Nike iD and also mean less warehousing. So the joints go straight from the factory to the outlets - as evident with the White/Camouflage-Gum bottom Lebron XIV.
Same as before there is NO performance gain for the consumer nor is there any cost savings as these 'easy to manufacture' joints cost more than their predecessors. Case in point would be the Jordan retro product which has seams, overlays, leather and gutted technology but is sported quite regularly by NBA athletes who play at a high level.