Historical revisionism on the First Crusade

As a student I must have had to write at least six essays on the First Crusade -- in Hitory I and History I, in Church History I and Church History II and in several other courses. It seemed to be a favourite topic with lecturers, and now along comes a historian who seems to be telling them that they all got it all wrong. Hat-tip, once again, to The Pittsford Perennialist: Crusade Revisionism

Historian Peter Frankopan is challenging a millennium of scholarship in his view of the First Crusade | The Australian:

FOR a thousand years the idea of the crusade has defined nations and empires, justified wars and acts of terrorism and inspired everyone from medieval minstrels to Ridley Scott.

But is all that potency built on a misunderstanding? New historical research suggests that the campaign that became known as the First Crusade was not a religious war, was not started by the Pope, was not really about regaining Jerusalem and was actually a direct result of a little local difficulty in modern day Turkey [sic].