Foxo's criticism of Innocent III and the Fourth Crusade

Why does Foxo want Innocent III tried for heresy?

Foxo blames his launch of the Fourth Crusade for consequences in Constantinople, the Latin Empire, and the later balance of power.

Foxo explains a hostile assessment of Innocent III through his association with the Fourth Crusade. The argument links the attack on Constantinople with the Latin Empire and the weakening of Byzantine power before the rise of the Turks. The claim that removing him could greatly improve European history is Foxo's counterfactual judgment.