The sad thing is that the Islamic Golden Age was awesome because it had all the stuff the O.P. posting this drivel hates. That's what made it GOLDEN.
Education, Higher Thinking, Mathematics, Real Science, Art, Literature, Philosophy, Better Hygiene, etc. aren't things that guys like DAESH, The Taliban, Boko Haram, Al Qaeda, etc. are into. They might pay lip-service but "Science" to them is "The Earth's 6,000 years old and flat". "Math" is "Basic arithmetic involving machine guns and slaves". Art, Literature and Philosophy is Satan and promotes thinking. Hygiene is "Western Effeminate stuff cuz REAL MEN ARE STINKY WILD BEARDIES! ARRRRGGH".
Had Genghis Kahn not trashed the place, Western colonial/business types divided up the land in awkward fashion and exploited it and endless military forces blowing stuff up and never bothering to put much effort in rebuilding....the Islamic world would possibly still be a decent place.
Also; Blame Wahhabi. THAT STUFF IS EVIL!
Now; Granted, pre-Wahabbi Islamic Kingdoms could still be frummy and brutal but, that said, it depends on the Sultan/King/Head Guy, rather than the faith, itself.