Yes, we're picking on the 14th century-minded jihadists who swept through much of the Middle East and Europe converting by the sword. And who revere those glorious days of old because nothing they've done since has been anything greater than small gangs of street thugs have been able to accomplish.
The Middle East has been denuded and desertified by their primitive agricultural practices. The culture that invented the "0" now preaches only death and destruction because that's all they know any more. There are no great schools or philosophies or physical advancements or, well, anything. They are culturally bankrupt and have no dream or ideal beyond the Ummah.
Trouble is, once Ummah is attained, then what? What does it even look like? What will it do? No idea.
I'm not sure how to pull these people out of a philosophical Stone Age and at least into the 20th century. But until they leave the 14th century, they will be treated with contempt and a certain amount of pity by those of us who have bothered to maintain morality in a 21st century environment.
The Indians (as in India) invented zero. Arabic traders spread the use of zero, hence "Arabic numerals" but the Indians invented the concept of zero AND the numeral system. So you are even more right than you know. :0)
You insult the (relatively) progressive 14th century mind.... the Jihadis are stuck in the 7th or 8th century: they represent a spirit of the darkest portion of the Dark Ages (I know, the term's not politically correct anymore, but ....)