Toothbrush argued that the Holdomor never happened

The argument is that the famine in 1932-1933 wasn't a genocide, according to such notable anti-soviet historians as Conquest, Davies, Wheatcroft, and even Applebaum.

It was caused by, among other things, a lack of an independent review of numbers collected by local officials throughout the USSR, being forced to use wheat as a currency to trade with europe, the need for rapid industrialization in anticipation of another invasion (which eventually happened) and to a lesser extent sabotage of the harvest and killing of livestock by the local propertied class in opposition to collectivization among the poor peasants. All of these factors combined with bad weather within a normal range (that caused famines elsewhere) led to the famine.

And as a nice excursus, the total numbers of people dying to Stalins misrule is nearly the same as those who died to the Axis Invasion.

This is actually holocaust trivialization, according to Jewish experts on the holocaust in Eastern Europe.

https://jewishcurrents.org/the-double-genocide-theory

The writer is notable as a historian and as an activist who fought to protect two jewish holocaust survivors who were being tried as soviet collaborators (they were just random jewish survivors of the holocaust). He does not, to my knowledge, have any connection to the soviet union or communism.

As someone who had family that survived a nazi death camp, I would consider trusting the source of that misinfo significantly less.