Spangle - You are the one not 'calling it out', as you put it.
Your perception of extremists 'literally interpreting' the Koran simply accepts their excuse for their murderous behavior as valid.
They say they are 'interpreting' because it's more easy to live with than admitting that they are clinically insane, and have no moral compass whatsoever.
If people literally 'interpreted' the bible, you would have plenty of people with one eye and one hand, because the bible instructs removal of them of they 'offend'
You can always find excuses for bad behaviour, from the mild to the extreme, but ease of finding them does not automatically confer validity.
Using writing from thousands of years ago written by people for whom life was cheap, and a sense of moral superiority was vital, does not excuse the murder of innocent people.
I do 'call it', because I don't follow the excuse for it, which you appear to do.