Yehoshua is not the arbiter of who is a Jew or what being Jewish means. He is a secular version of the Haredi Jews who won't accept Reform Jews. Yehoshua reflects the bankruptcy the secular anti-religious left. The left made a mistake when it left religion to the right. Those of us in the US who are think of Judaism as spiritual path that offers us a way of living that is compatable with living in a modern world will continue to be Jewish withouth Yehoshua's help.
One student killed, three wounded at Arizona campus during fight (a)
from the article: Alienated Jews