I thought I recognized that name and yeah, this guy's whole project as a "historian" is to minimize Nazi crimes by casting them as nothing out of the ordinary compared to what the Soviets did, and all just part of a single system of violence.

https://en.wikipedia.org/wiki/Bloodlands

the worst kinds of anticommunist lib academics eat this shit up - here's a review of his book from Anne Applebaum that's revealing:

"Snyder's original contribution is to treat all of these episodes—the Ukrainian famine, the Holocaust, Stalin's mass executions, the planned starvation of Soviet POWs, postwar ethnic cleansing—as different facets of the same phenomenon. Instead of studying Nazi atrocities or Soviet atrocities separately, as many others have done, he looks at them together. Yet Snyder does not exactly compare the two systems either. His intention, rather, is to show that the two systems committed the same kinds of crimes at the same times and in the same places, that they aided and abetted one another, and above all that their interaction with one another led to more mass killing than either might have carried out alone."

Yeah he totally doesn't compare them, just says they were basically, qualitatively the same and that Nazism and communism are symbiotic and lead to the same results

And it's worth noting that probably the foremost historian on Nazi Germany, despite also being quite lib, finds his methodology and understanding of both Nazism and the Soviet Union under Stalin to be shit:

https://www.lrb.co.uk/the-paper/v32/n21/richard-j.-evans/who-remembers-the-poles