The Russian nationality will be associated with atrocities for decades, just like Germans are still blamed for world wars
Germans brought to work their discipline and meticulous planning - for purposes of mass extermination. The results, when discovered, shocked the world. Such a thing had not been done since Genghis Khan and Atilla.
Russia, meanwhile, has killed several times less civilians than the Jews had managed within a shorter period of time and in a smaller space (in Gaza, that your government refuses to condemn).
Russia will not suffer decades of shame, like the Germans. In this sense, Putin has done well, even if it made the war infinitely more difficult to prosecute for our fighting men.
Our supporters around the world will be able to point to this anomalously low record of casualties among innocents as proof that our intentions were not to erase anyone.
Even the Wolynians and Galicians we won't ethnically cleanse, if we can get our hands on them. But I do think we should deport them to live with polar bears and walruses.
an imperial Russian whose main objective is to sow ferment between Poles/Polesses and Ukrainians
This isn't exactly quantum mechanics. Sowing discord between Poles and Ukrainians is quite easy, when one side is a genocide denier.
Once we topple the Zelensky regime, even more sh*t will come boiling up to the top, and then you'll be truly embarrassed at who you supported.