Nah, they are pragmatic rulers who use religion and war (and religious war) as an extension of politics. Their legitimacy is entirely based on being the custodians of Mecca, so they make sure Mecca remains at the forefront of people's minds. The Wahabi royals are not unlike certain politicians who brand themselves "defenders of traditional family values" and then whip up hysteria about "war on Christmas": they manufacture conflict to strengthen their own legitimacy. Without conflict they become irrelevant, so they'll make sure conflicts never end.

It's such an old game, but it's incredible how well it still works all over the world.