What I said is general consensus.

If you want to see what a doubt is, you should look into historical holocaust numbers. For example, estimates of death count in Majdanek camp are as follows

• Initial claim by Soviets - 2 million
• 1944 - 1.7 million
• Nuremberg trials - 1.5 million
• 1975 - 1.38 million
• 1991 - 360 thousand
• 1992 - 235 thousand
• 1998 revisionist claims - 42 thousand
• 2005-present - 78 thousand

Auschwitz also famously went from 4 million to 1.1 million.

These are just numbers, there were many egregious claims about the methods of executions. The more you dig into it, the more ridiculous it gets. Most recent example I found was bone-crushing machine which was allegedly used for getting rid of evidence of Holocaust, yet the actual purpose of it was refining cement (but they always use these annotations and sell you complex stories when truth is simple and reasonable in actuality).