Actually the US and China and the UK and any nation with satellite surveillance knows exactly what’s happening. And Russia and the Ukies are fully aware of that. It’s the people who have no idea. And that’s the way govts want it.
Ukraine reduced forces in Donbass, the focus of Russia’s demilitarization effort, to achieve very temporary and minute political “victories” in Kherson.
This is to titillate those easily titillated by such things, I suppose.