I have read all that a couple of times and found the inconsistencies to be astounding. The reality of the universal umma is that even when the world is 100% Mohammedan the violence will not cease. The Mussulmans will turn on each other in ever finer attempt to achieve purity as the Sunni and Shia behead each other and all the other deviants, Druze, Sufi, etc. The last two Saracens on earth will discover each that the other does not comport perfectly and is therefore APOSTATE and one will behead the other or perhaps it will be simultaneous and mutual and the Termites will inherit the Earth.
What do you mean “will”? They already have and have done since the time of their prophet’s death when he did not name a successor. The Sunni’s versus the Shiite’s. The time of the Ottoman Empire in which the Wahabi’s - who now control the House of Saud - went through the Arabian peninsula and claimed other mooslimes committed shirk. Shirk is worse than apostasy in ISlime.
Sunni’s believe shiites are not muslims and even have decreed it multiple times through fatwas.
Wahabi’s and Salafi’s are the most violent of sects of the Islimic faith. A mere mention by a cleric to one of those faiths can spell death for ANYONE. Tell me they “will” when they already have turned on their own.