"ISIS is not Islamic

[FatAndFaithless]

Again, who decides and why does it matter?

Um, it's the topic of the thread.

Well, yes, but my point is that I don't think that someone can just arbitrarily decide if someone is a 'devout' muslim or a 'nominal' muslim, nor do I think it matters much at all.  Do you think there is an objective criteria to differentiate between a devout and nominal member of a faith that we can ascertain without getting inside the head of an individual?  And from where did this criteria come, and on whose authority?

It's a giant red herring, in my opinion.  The 'devoutness' of ISIS members is irrelevant to the issue that they derive their ideas and stances from their interpretation of the Koran and its messages.  That's what they state, and I don't see any reason to say they're lying about that.