He's sort of right, but not in the way this article is going to be interpreted domestically (see comments in this thread for an example). Oil revenue in the Gul

He's sort of right, but not in the way this article is going to be interpreted domestically (see comments in this thread for an example). Oil revenue in the Gulf countries has enabled wealthy elites to sponsor madrassas around the world, which are pivotal to the spread of Wahhabism, an arch-conservative branch of Islam. The Gulf elites are not the cause of Wahhabism (its roots go further back and it was more of a grassroots movement in the 1970s), but they are its most important promoters. Another contributing factor is high birthrate in poor Muslim countries which has caused a bit of a demographic shock (the low-birthrate Europe has simultaneously benefitted and suffered from it, first importing immigrants from MENA as a source of cheap labor, and them having to deal with the disaffected and radicalized 2nd generation of the original immigrants, after failing to integrate them successfully into the mainstream society). It is no secret to anyone that poor uneducated people who are also highly religious tend to have more kids on average. This is one of the primary causes behind Islamisation of Turkey, formerly a staunchly secular country. Turkey is now, together with the Gulf countries, one of the major "sticks in the wheel" behind eradicating ISIS in Syria.