Hitler asserts that Germany created Ukraine in 1918 to destabilize Russia
“The Slavic peoples, on the contrary, are not destined for their own life. They know this, and we do not have to convince them that they can do it too. We created the Baltic countries and Ukraine in 1918”
Germany did not created Ukraine, but they had serious investment there in 1918 as they were losing the war, in supporting antisoviet forces and creating bourgeoisie Ukraine hostile to RSFSR, but ultimately they crumbled too fast and Poland replaced them in this effort for the next two years. Also Germans, as in Austrians, did supported creation of the modern ukrainian nationalism against Poles and Russians in decades prior.
This is more to the point with Baltic countries, which arose from the never finished long and bloody colonisation by the Germans.
So Hitler was of course as usual twisting things inside his asspull mixer, but there was longstanding german influence in both regions. Without which things would went smoother for the bolsheviks but i don't think this ultimately changed much, Entente intervention was more substantial in both those areas.
Also, iirc nazis and neonazis heavily propagated and overblown the viking version of Rus history.
Entire Mein Kampf is like this. Pretty embarassing book tbh. I read this once and asked myself "how that book could ever turn anyone into nazi", and the obvious answer was "it did not, people claiming that were nazi even before reading".
It's like the bible. Most Christians have never seriously read it, only heard cherry picked lines from their televangelist pastor. And if you actually did read it, you'd realize that it makes no sense and goes off the rails fast.
I used to think that, then I sat down and read the thing. A lot of it is objectively great ancient literature, on the level of Virgil's Georgics or the Homeric hymns.