Fsr they want to make the path longer and therefore higher resistance? Taking the “electricity is like water” analogy too far?
On a different note, builders that have a 3d printer with a heated print bed - you can use it to help flatten shrink on the ends super nice by preheating the bed to 95-105c depending on your shrink and setting the to be flattened pack on it. Let the whole pack come up to temp then apply the shrink - works automatically