[Al-Qaeda is a Saudi proxy army. It was made up of mujahedeen which nobody disputes were Saudi proxies, and Bin Ladens family is tied to the hip of the Saudi Royal Family. Then suddenly 9/11 happens and Al-Qaeda hates the Saudi government, despite being armed and funding to engage in advancing the same geo-strategic interests and receiving continuous support from the Saudi government.]
Arabs don’t take their marching orders from the government. That’s why they make such lousy soldiers, from the perspective of the ruler. Nobody wants to die for the leader - everyone wants to be last man standing. Read a Middle Eastern history book about all the different regimes that have come and gone and it’s full of intra-regime intrigue - fathers killing sons, siblings killing siblings, sons killing fathers, grand viziers killing sultans, generals rising in revolt, etc.
The idea that the Saudi royals are feeding their subjects Wahhabism and making them radical rather than singing along to avoid being killed is a joke. In these places, every man thinks he could be sultan, and pointing to the irreligion of the incumbents is an excellent way to rally followers and raise the flag of revolt.