Putin is a bourgeois nationalist. He has no desire to bring back the soviet union, or even the ability as Russia is not currently experiencing revolutionary conditions.

it’s not just invading, it is conquering to reform.

The initial war aims were more reserved and the march-April 2022 talks showed that Russia was fine with Ukraine remaining independent (though this may have partially been because the war had turned out to be more costly than imagined). However, "conquering to reform" I suppose is an adequate description of the current war aims.

the nazi propaganda you swallowed is bitter

Most of the Nazis are on the western side of the war, as they have pretty much always been throughout the past 2-4 centuries of western led genocide and slavery against the rest of humanity.