Agreed on your points with regard to waging war.
But with regards to destroying an electrical grid, it would be a very topical intro to the idea. And there's some interesting info, in that destroying a grid is proving to be much harder than one might expect. Russia is a particularly incompetent foe, much like the Pakleds in Star Trek, but even with their massive armament, and being able to target an indefensible number of positions spread over an indefensible geographic area, they have not yet been fully successfully in their technical aims of grid destruction.
And to fail at the technical aim, while also accomplishing the exact opposite of your social aim (Ukrainians are more resolved, rather than demoralized), is utterly embarrassing and pathetic.