Morris, whom you cite, states very clearly, that "the Yishuv and its military forces did not enter the 1948 war, which was initiated by the Arab side, with a policy or plan of expulsion" (Middle East Quarterly, Spring 2005). What Ben Gurion actually did during the war was most important, like refuse to take the West Bank, which you find it convenient to ignore. Again, if you want just to rely on selective quoting: "This will be a war of extermination." Who said that? Hint: it was not a Zionist. By the way, I am not PSM; I am in the American Midwest, but when did accuracy ever concern you?
Palestinian teen arrested for allegedly rioting in East Jerusalem (Haaretz)
from the article: Im Tirtzu hides behind respectable mask of 'Zionism'