Yes, that’s all well and good, but the wealthy, corrupt, Sunni-superiority Islamo-fascists who pull the strings of jihadi terror still rule in Saudi Arabia, apparently with the support of much of the US establishment.
Taking out Saddam, the proxy war in Syria and support of their invasion of Yemen are all to the advantage of the Saudi ruling family.
Keep in mind there is a battle within Islam for Islamic supremacy and the Sunni are only half the equation. The Sunni must show their rivals the Shia that their methods are better, while the Shia under Iran (and the ruling 12er Sect in particular) bide their time building arms to strick a blow that will make all Sunni efforts look like children playing Cowboys and Indians - thus winning the rivalry and leading Islam to its glorious conquest of all humanity, plunging all into Paradise (aka, human extinction).