I mean, if Israel is doing genocide they're pretty poor at it and didn't learn much from the Germans.
Even today, the international population of Jews still hasn't recovered to the levels pre-WW2.
However today just in Israel alone there's more than 2x the total population of Palestinian Arabs than there were in 1948.. not even counting the population of Gaza or the West Bank, or the millions more of international Palestinians refugees.
Genocide is clearly an overreach, which would require proof of specific intent and policy. At worst it's ethnic cleansing, but in reality it's just an 80 year war that has never stopped.