What they’re enamored by is their image of themselves as Jews who have the moral courage to attack a Jewish state and the moral impunity to do so, which their Jewishness gives them. (“What, me anti-Jewish? I’m a Jew myself!”) Far from being self-hating Jews, they are self-loving Jews of the I’m-not-one-of-you variety.
Not very catchy, as the author admits, but more accurate. A related concept might be the "asajew", named for those persons whose Jewishness only manifests when prefacing a statement attacking other Jews or Jewish institutions with "as a Jew...." Obviously, there are plenty of Jews with minority opinions who nonetheless identify clearly with the Jewish community writ large even as they dissent on particular matters. But there also most certainly is a subset of Jews who are Jewish only insofar as it is an effective cudgel for bashing other Jews (and shield against their protestations).