I am sure the grandchildren of Holocaust survivors are traumatised. But so are the grandchildren of palestinians who lost their homes and livlihoods as an indirect result of the Holocaust. So far the world has not created a homeland for them as it has for the Jews. They were born and still live in refugee camps.
Red Cross delivers aid to Taiz, Yemen, for first time since August (Reuters)
from the article: Study: Holocaust trauma affects grandchildren of survivors