DY,
The claim is that “until the great public pressures for the establishment of a Jewish State, the Mufti had no interest in the Jews of Warsaw, Budapest or Vilna. Once the Jews of Europe became a threat to the Mufti because of their imminent influx into the Holy Land, the Mufti in turn became for them the incarnation of the Angel of Death.”
There was no “imminent” influx; there was an ongoing influx – it started in the 1880’s (before the Mufti was born, as Avi K pointed out), and it was spurred by conditions for Jews in Europe. Of course Zionism played a role, in that it gave the immigrants hope for a positive future, but there would have been an immigration issue regardless.