But it's no different to saying that a "good Catholic" follows the teachings of Catholicism more closely than a less-good Catholic or a good Jehovahs Witness follows the WTS instructions more closely than a less-good JW does.
I think that only serves to reinforce my point: Both the JW and the Catholic are Christians; what it means to be a "good Catholic" and a "good JW" are very different things.
Why can't we allow the same for Islam?
Why can't we say that the ISIS militant is a good Muslim according to their idea of what Islam should be and e.g. a Dancing Dervish too is a good Muslim according to whatever they believe in? Why can't we allow for a cosmopolitan interpretation of Islam that takes the "religion of peace"-part serious?
Sure none of this is going to be true or very consistent (this goes for the Catholic and JW to BTW...), but that is because it is a religion.
Your 'god' Obama made statements about it, but you simply cannot explain the basis for them.
I am an atheist.
I disagree with Obama on several points regarding the relationship between ISIS and Islam. I think he says what he does for tactical reasons but that does not make them any more true. My views on Islamic terrorism and ISIS are aligned with those of Bernard Haykel. You can find a recent summary here:
https://www.hsgac.senate.gov/download/testimony-haykel-2016-01-20
to ignore the Islamic background and
content of the Islamic State’s ideology or the material factors that led to its rise is to fail
in the scholarly enterprise and to fall short in providing the policy maker, the student, and
the public with an adequate understanding of the global phenomenon of jihadism.
(...)
But no one should be fooled into thinking that the society and state established by the
Islamic State is a perfect reproduction of the past, as its ideologues and recruits would
want everyone to believe
Haykel is one of the foremost scholars on Islam. Is he wrong?