Jewish (and since the church came into being, Christian) people have been falling away from.. and fighting against... Biblical faith and teachings...for thousands of years.
In Judaism, the term is “the Enemy Within”...(or, erev rav)...and dates back to at least Moses’ time in Sinai
Today, most faithful Jews no longer accept the idea that the actual Enemies are Within... people have free will, and this means that while a person can be born into a Jewish family, s/he can choose to “disfellowship” themselves by actively attacking Biblical faith and/or the Jewish people. Most of the persons-with-Jewish-sounding-names that promote the Enemies of Biblical faith and/or the Jewish people’s survival..............long ago adopted an alternate, and opposing, philosophy.... one diametrically opposed to Biblical faith and faith communities, peoples.
They are usually believers in communism or ‘progressivism’ or other state-centered, dictatorial ‘philosophies’...and often they have adopted or inculcated aspects of the Nazi-style anti-Semitism (thus, they are said to suffer from JSS or Jewish Suicide Syndrome).
Most faithful Jewish people consider these Enemies Within to be very, very sad cases, indeed. And most faithful Jews consider that these Enemies Within have proven by their evil actions, course of conduct.. to have disqualified themselves from any belonging to the Jewish people or faith (or, “is no longer part of Israel” or “is like a non-Jew in all respects”). Similar self-disqualification rules or concepts are found in most Christian churches, too, such as Roman Catholic Canon 915 and the concept of “disfellowship” or similar in many Protestant churches.
Similar for Catholics who advocate mass-scale abortion clinics like Pelousy...you can’t actively work for Satan and remain in the Book of Life
The argument has been that Ashkenazi Jews in the diaspora have never been satisfied to commit themselves to the culture in which they have settled. Rather, just as the Jews who worshiped the Golden Calf in the Sinai they want to change the world in search of something amorphous, something better. It is why they were such an easy target in Europe when Hitler came to power.