Stalin likely did not realize that collective farms would fail and cause millions to starve. It is still his fault but it was not as overt as Auschwitz. Similarly the “Great Leap Forward” caused mass starvation but it is a stretch to think that Mao intended this. Remember that Biden blamed Trump for Covid deaths.
Deaths in the Gulags and at the hands of Pol Pot were more likely to have been intended. And you can argue that Stalin hated the “Kulaks” because they supported themselves and so didn’t fit into the Proletariat/Bourgeoisie struggle narrative.
If only Stalin knew!
One of the things that (used to) confuse and astound people in the West, true believers insist reality is collective.
So in the case of the French Revolution, one of the things they did was set about price controls on Bread.
So bakeries were forced by law to sell every loaf of bread for less than the cost of the ingredients used to make it. You’ll never guess what happens next!
This same kind of mentality persists in collectivist soviet or marxist theory. “Our plan would have worked, if it weren’t for those meddling kids!”. They really believe, if everyone “believes”, then everything will be Utopia.
It is only because of “wreckers and hoarders” and people who don’t sufficiently Believe, that these nonsense crackpot schemes don’t work. YOU need to get your mind right, Comrade!