Were the Jews that rejected Christ then essentially cursed by God to basically become a wandering thorn in the side of every culture they come in contact with?
Every generation of Jews born into their culture would grow up being indoctrinated to blame Christ as the reason the goyim hate them, that somehow the Torah gives them the right to drive the Palestinians away from their land, and that they're on a higher level of existence than the Gentile societies they live in.
The ones who are in power and actively enacting the destruction of the West will certainly answer to the Lord in Judgement, but I wouldn't blame each and every single Jew for growing up this way; nevertheless it'll be difficult for a Jew to accept Christ without risking outright expulsion from his or her community.
I just wouldn't think that the Jews are special in that they're extra evil or have been granted extra evil powers or have received a special curse or anything. They're a nation like any other with their own characteristics that can be beneficial and detrimental. The one unifying characteristic of theirs, whether they're reform, conservative, hasidic, or atheistic, is their complete and total rejection of our Lord and Savior Jesus Christ, which is unique among all the world's religions, which at least will claim that the had some good ideas. And that rejection is why they appear uniquely cursed. That's ultimately why they are exceedingly wealthy, and it's also why they suffer with mental illness at a strangely high rate and have a host of other problems. They disprove the so-called "prosperity gospel," by showing that excessive wealth is a curse.
The Jews are the only nation in the present (and in the 1900+ years of the existence of the Church) whose national identity is consciously defined in a rejection of Jesus Christ. It's not a matter of them being granted a special power or curse, rather, it's ironically a consequence of their previous status as the chosen nation of the Old Testament.
While Gentile converts may have to give up some of their cultural habits because those are immoral or un-Christian, a Japanese or Nigerian or Mongol or Swedish Christian doesn't need to give up his or her ethnic identity altogether to embrace the Gospel. I could see a special case for those from Muslim countries whose ancestors had been Christian centuries before, e.g., an Anatolian Turk discovering their Greek Orthodox heritage, or an Arabic-speaking Egyptian/Syrian/Iraqi becoming part of the Coptic or Aramaic Christian community. Pakistanis, Indians and Bengals share the same Indo-Aryan origin and are only divided between Hinduism and Islam; Christian converts in these cultures effectively reunite.
But what about the Jew? We know that most of them are actually of Khazar descent, will converting to Christianity make them LARP as Central Asians? They're ultimately a rootless, wandering group, a non-nation amongst the nations, if you put it. Accepting the Gospel gives them no choice but to assimilate in wherever country they find themselves in and then becoming rooted.
Perhaps that's the ultimate goal of their cultural diversity plan, to make the Gentile world a reflection of their inner Jewish culture. Nobody can ostracize them as rootless if everybody else ends up rootless as well.