They aren't Jews
Their "Jewish heritage" is just a convenient talking point. A way for them to virtue signal while claiming they aren't "white" therefore they aren't racist.
See: "only white people are racist", "I'm not white, I'm Jewish"
John 8:44 New International Version (NIV)
"44 You belong to your father, the devil, and you want to carry out your father’s desires. He was a murderer from the beginning, not holding to the truth, for there is no truth in him. When he lies, he speaks his native language, for he is a liar and the father of lies."