I think the majority of Jewish people only see Israel as "plan B" if a country attempts to do another holocaust. They have a place they can go to, who actually wants them there.
The holocaust was really actually part of a tradition of persecution in Europe. Jewish people were always blamed when shyt went south. It was never the king or prime minister's fault, it had to be someone else. This is the narcissistic element of white culture. If they can't target someone that looks physically different, they exaggerate the differences amongst their own to claim that "those people" are different and not to be trusted. Joe Rogan and Seth Rogen are both white men. They want you to believe that Seth Rogan, a man who is literally whiter than Joe Rogan is different.
The support for Israel isn't based on protecting jews. Its based on maintaining it as a repository for jews. When they're done targeting Latinos, black people, Asians, etc. They'll turn their sights to the "wrong" type of white person: jews. They've always done this shyt. The difference is now they'll just deport them to israel and the ones that refuse to leave will either be deported elsewhere or killed. The nazis started out trying to do mass deportation. When that wouldn't work anymore they just did what their ancestors did and enacted a pogrom using 20th century industrial technology to kill more than had ever been killed in any previous pogrom.
Because they refused to take responsibility for their own failures and just accept jews as part of their community, millions of people have died and will continue to die until israel as it exists is replaced by a secular state which ACTUALLY values tolerance, human rights and peace instead of this ethnostate doing settler style colonialism with highly sophisticated weapons.