Re denazification.
Its an example of rendering language meaningless. It's deliberate.
The Russian state has a lot of its identity post WW2 in terms of how the glorious empire of the Soviet Union defeated the Nazis. In a way not dissimilar to our own national identity. It says 'Hey we are the Good Guys'
However Putin is behaving like a Nazi and the state media is using phrases like 'solution to the Jewish question'.
But if Putin accuses his enemy as being Nazis he is both trying to tap into this nostalgic sense of identity and nationalism and has already used up the discourse over Nazis.
It renders the ability to talk about Nazis more difficult for the opposition. No one knows what a Nazi is anymore, so it renders it impossible to use.
Hes also tapping into older anti-semitic and genuine Nazi sentiment with the Ukrainian Solution language. There has been a big rise in far right groups in Russia so this appeals to him.
Thus Putin is both anti-fascist and fascist at the same time. Again rendering the word meaningless.
Its an Orwellian type trick well detailed in 1984 which in turn was based on Soviet style brain washing. You say things are both one thing which is completely the opposite to reality. How many fingers am I holding up Winston.
Its all about empire, making it harder to question genocidal behaviour and an invasion.
Remember this is all about the notion of Soviet/Russian Empire. It is the classic looking back to history as something to aspire to (Hitler was trying to recreate a notion of a modern Roman Empire which would last a thousand years).
So don't think its nonsense or bullshit. Its playing to several different Russian audiences at the same time and trying to occupy the space which opposition would also normally hold.