So what does your theory say about loss of power if we follow your thought?
That one drone that went through hit the worst spot possible?
I don't think that Russia needs to do much of anything to induce pretty sever power shortages in Ukraine over this next year. The whole country is now a dysfunctional cluster-fuck with no friends on the world stage, and what passes for 'leadership' fighting among themselves over whatever scraps they can get before they make their respective exits.