1. Rav Kook was a great leader and was recognized as such by all of the gedolim and especiallty Rav Sonnenfeld (who gave him a beracha to be Cohen Gadol), Rav Shlomo Zalman Auerbach and Rav Eliashiv. Anyone who disparages him is doing an extremely swerious aveira.
2. Anyone who sees Hashem’s Hand in history knows that the British were at the time willingto help the Geula and the Turks tried to interfere. Later, the sun set on the British Empire.
3. Both Rav Kook and the Imrei Emet called for frum aliya because they saw what would happen if there was not.The present sttate is due to the fact that frum Jews continue to err.