There’s got to be something in what they are taught in these subjects at school.
I tried to have a quick glance at their History curriculum and their doesn’t appear to be any clear signposting to the Holocaust as part of their WW2 study (albeit a very quick glance so by no means definite)
The education spending over there is terrible. Get rid of a few nukes and have a more educated population. Although then they wouldn't have them voting for the hyper capitalist nonsense that means they happily wander to their grave sick and poor over getting people in a more comfortable position to pay a little bit extra in tax so that they can all have healthcare.