Exactly. Communists killed even more people than Nazis, but in modern Russia they still have a Communist Party. It's not the ruling party, more like a fringe party, but nevertheless it's supported by many Russians
Those points are not true
1. People in Ukraine were literally eating each other. Where in Russia was it happening? In Moscow? No. St Petersburg? No. Novgorod? No.
2. Not a starvation politic you say? Everyone knew about the famine, soldiers were expropriating grain from weak and hungry people, the communists saw it with their own eyes, and still proceeded. It was an explicit punishment for not fully supporting Soviet Government.
3. The grain was in fact exported during the famine, this fact is undisputable as there are records in the countries that were buying that grain. There are no records of BUYING grain by the USSR at that period.
And the last point you make is completely ridiculous: "well, it wasn't happening for 10 years, so it's just an innocent mistake" - it was happening for 2 years and 3.5 million people died in Ukraine. How about that for a mistake? If 1000 died and they stopped it, I would agree. Or maybe 10000. Ok, 100,000 hungry deaths you cannot ignore, but 3.5 million people?! It was intentional and it was a genocide of Ukrainians.