Islam was a reactionary to the 6th century tribalistic pagan arab . See the history of early Islam [1]. It encompasses changes including racial equality, Women's right and social security.
Did you already forget the millions of muslims who tried to rise up (and were mostly denied unfortunately) to throw out the dictators in their respective countries in 2012?
Their sole act of resistance against those dictatorships just contradicts your stance that Islam is a reactionary ideology. It's a religion, and as such, encompasses too broad a spectrum of beliefs and interpretations for you to simply put that under the same umbrella and call the entirety "reactionary".
I suggest you follow İyad el-Baghdadi[0] (the Emirati, now Norwegian citizen, not ISIS chief evidently) because you'll learn a lot about Islam that you probably didn't know.
He's making up a strawman "reject Sharia" argument, whereas most criticism is clearly meant (and usually also worded) as "reject Sharia law". Pretty dishonest (although that's how politics works, if it's not divisive propaganda nobody listens).
Ah I see. Yes, coming for non-native speaker, english is sometime confusing.
Anyway Islam seems like reactionary if you look at it from today standards and in need of a reform (which I believe it's happening right now). But it really had some progressive ideas for the times even compared to their neighbour medieval Europe.
"reactionary" adjective opposing political or social progress or reform.
I really hate this word, it makes no logical sense, but that’s language for you :D