He doesn't consider himself to be white though, he embraces his Jewish identity, and he considers white people to be his enemy.
He pretends to identify as white so that he can get away with racially attacking white people and pushing conflict between white people and other races while passing it off as the "racial self criticism" of a concerned white person.
This strategy is so common that it's stereotypical. I usually dig up the backgrounds of people when a "white person" makes racist remarks about white people in the public sphere because I want to reverse engineer their actual agenda, and this is the case about half of the time.
Bullying and harassment is all you have left. Pure ad hominid attacks , you can't fault what I say so you attack my character instead. Or whatever you think you know about me. You don't know me.