Final answer:
With more touch-points in a global supply chain, lead time variability increases due to the potential for various delays and greater coordination requirements, despite technological and policy advancements.
Step-by-step explanation:
As the number of touch-points in a global supply chain increase, it is likely true that lead time variability increases. More touch-points mean more potential for delays and discrepancies due to a range of factors like customs clearance, quality inspections, handling errors, and coordination among various parties. Despite advancements in technology, transportation methods, and the development of policies to maintain supply chains during national emergencies, the complexity introduced by more touch-points generally leads to greater uncertainty and fluctuations in lead times.