Okay, maybe a little more needs to be said…
For one, we have to understand that major geo-political shifts occur for complex reasons. The problems felt in the 6th to 11th century Europe were the result of the world’s largest empire collapsing and taking with in the infrastructure on which many nations were built. Without safety, investments in roads, and a surplus of food, it doesn’t take long for an entire civilization to crumble.
Second, we also have to question what we even mean by the “Dark Ages.” What was felt in Italy, France, and Germany was not felt in the Byzantine Empire or Ireland. In fact, in both of those places, culture thrived, and much of what remains from the ancient world comes through these nations (each of which were Christian.)
And finally, and maybe most to the point, we need to look at the positive effect that Christianity had on the world throughout history. While the overall output of societal growth may have been much lower in the year 950 than in 150, that doesn’t mean that there weren’t any advancements or that the Church was getting in the way. The reality of it all is that the Church was the only major force keeping the Western world from complete collapse, and had it not been for its insistence on art, culture, and studies, the scientific revolution may never have happened.