I was talking specifically about Lord Humungus and his pig intestine threat, but I will address the broader issue that you bring up.
The Islamic civilization had conquered the heck out of the Byzantine and other empires - from Spain to Persia to India to Indonesia. It was the first civilization to unite all of the Afro-Eurasian landmass (including Sub-Saharan Africa and China) in commerce and free exchange of ideas. In 16th through the 20th centuries, however, it has clearly fallen behind Western Europe, which did a lot of the things right during that time - starting with the discovery of the Americas, which produced a humongous economic boost and encouraged further investment in trade and technology. Another thing that Europe did right during those successful centuries is taking a lot of good ideas from Islam, whether directly or coincidentally, including less religious centralization (i.e. protestantism), greater interest in hygiene and medicine, rediscovering its own classical literature that has been preserved by Islam during Europe's dark ages,
and so on. Other factors, like soil erosion and climate change, may have contributed to Islam's economic decline. All this has led to military losses to the West, and that has been a handicap ever since. In the 20th century, the so-called
Dutch disease of oil export has further limited the Islamic world's prospects for economic growth. None of those misfortunes are a result of Islam itself.
It was capitalism, science, and industrialization that has made the West great during this time - and colonialism has helped as well. Liberal democracy, on the other hand, is what's bringing the Western Civilization down. It discourages family values, leads to a demographic collapse, and raises the power of the state. If you want to see the future of the Western Civilization, look to Italy. If you want to see the future of the Muslim Civilization, look to Dubai.