This is amazing.
The Kremlin has always been paranoid. And now, Ukraine is giving them something to be paranoid about. Every transport is a risk. Every storage container. Every warehouse. I doubt the Kremlin has enough loyalty to have people screen everything that can potentially have explosive drones.
What's better? I would be willing to bet that the transporting and storage of the drones is entirely unknown by the drivers and workers. I'll bet someone was paid to get "sanctioned supplies" into Russia. Hell, they could actually be sending them with sanctioned stuff.
This could be a devastating psychological warfare strategy that may just work against the world's biggest psychological threat.