Gubarev only expresses in more incendiary language the same thing said slightly more vaguely by Putin, Medvedev, Solovyev, Simonyan, Peskov, filmmaker Mikhalkov, etc: https://www.justsecurity.org/81789/russias-eliminationist-rhetoric-against-ukraine-a-collection/

All but Putin openly call for a return to gulag purges, concentration camps, lustration and utter erasure of Ukraine.