We literally have the minutes of the Wannsee conference, in which the Nazis decided to kill all Jews.
The German state carried out a massive logistical operation of moving millions of people to specially built camps and gassing them to death. Comparing that to a famine is insane.
You're drawing an equivalence between patently absurd, factually false denialism about the Holocaust on the one hand, and the dominant scholarly view that the Soviet famine of the early 1930s was not a deliberate attempt to kill Ukrainians on the other hand.
What liars say is irrelevant to the truth. What Neo-Nazis say isn't relevant to this conversation and I'd rather not boost its signal in any way.
No they don't, don't trivialize the Holocaust with shitty comparisons like this.
On the other side, pretty much everyone accepts that there was a major famine in the USSR in the early 1930s, mostly caused by Stalin's collectivization policy. That's just a fact.