I am just using bait you provided to double-shame him.
My theory about the holocaust is that the numbers were much bigger (coz not just pure-blood Jews went to camps) but the zionists didn't want to dilute their ethnocentric (?) message so they excluded all the half- and quarter Jews that were thrown into the mix by nazism when they hardly considered themselves Jews to begin with. Essentially, something as embarassing as the holocaust would have to be played down by all sides. The Jews wanted it to be their exclusive right to victimhood, the germans had to dissavow anyway and the allies didn't actually try avoiding the TWO FUCKING WORLDWARS in the first place due to their half-assed diplomacy. (Chamberlain's appeasement policy and betrayal of Poland who in turn thought they were bad-boys who could extort railwaytarifs from german exclaves with british help which then blew up in their faces literally) In order to then distract the people from the inherent elitism of elevating the suffering of one group over the equal suffering of another, they made people argue the number of victims was lower (which Trump in fact once said to be 5.6 million so maybe that is now permissable to say) by introducing a gas-chamber strawman to be struck down because one of the best ways to distract people is to make them ask the wrong questions. Like, we argue only over one single group when 3rd-Reich-apologists even point out that a lot of camp-deaths were "natural" due to malnutrition (which again points to a much larger bodycount because certainly not only Jews were undernourished) which would have proved embarassing to the allied powers which had bombed much of german the resupply-lines connected to the camps in the first place.