Don't immediately spout out whatever the media spoonfeeds you, especially when peddling diametrically opposing information. Multiple generations of inbreeding with little to no outbreeding in-between would inevitably reduce the mutational load (and thus deleterious recessives) while eventually accentuating the beneficial recessives. The first generation has external factors (like socio-economic factors, Dammam being a good example of the negligible difference once excluded) and doctored studies undermining that rhetoric, and thus the 3-4% increased risk of expressing defects. Meanwhile, the outbred, "non-consanguineous" alternative would express less benefits and more detriments and significant defects over time due to the aforementioned, rapidly accumulating mutation load.