Yes, it is true Ukraine's infrastructure has been damaged. But it also is true that Russia has suffered losses in men and equipment (and ships...) far greater than they ever expected, and more than their regular forces could handle. That's why they've had to mobilize a bunch of guys who haven't touched a gun in decades.
Putinists are desperate. The 3 day special operation is now nearing 9 months long. Temporarily turning out the lights isn’t going to make Ukraine surrender. It will just increase their desire to remove Russian occupiers.
What’s really going on her is a gaslighting effort by Russia and its fellow travelers to make it seem Ukraine has lost and is no longer worthy of support from the west. That’s the only way Russia’s fake and Potemkin society can “win” this war. Its army has been soundly beaten and is on the run tonight from Ukrainian “farmers and miners”. Victorious armies don’t retreat, obviously.