Holysox I absolutely agree with you, especially about younger people
I experienced this 30 years ago when DD had Schindler's List on her A level English reading list. She knew all about the Holocaust, but she just did not understand the horrible detail and found the book very low key and boring, whereas I was born during the war, remembered the Nurembourg trials and read the books and found the sheer banality of the violence in the book so terrible. So I went to the library and borrowed some personal testimony books about the experiences of the holocaust. Once DD read about exactly what happened in the Concentration Camps in nauseous detail, she understood Schindler's List.
The generation below her know all about the Cold War, but do not know what it feels like to live on that nuclear knife edge, where half of Europe lived under the heel of Russia and the terrible things that happened to people there. Even Putin's Russia is not as terrible as Stalin or Brezhnevs's Russia.
It is probably like we felt about the Spanish flu epidemic of 1918-20, before we experienced COVID. Now we can understand the fear that must have gripped people worldwide back then as it did us in 2020.