MBS only cares about MBS, and he’s just fine with murdering his own citizens. So expecting this rush of philanthropic spirit from him is not terribly realistic. Israel is a fact, he and Bibi understand each other, and the Middle East is the Middle East–they were all plotting and scheming against each other long before Israel was a thing.
Peace is better than war, and this is a good thing, but the motives for it are, shall we say, Machiavellian. Now if only they had the Renaissance to go with it. Maybe later.