People saying that they're "not real Muslims" is ridiculous, because it implies that there is a specific interpretation of the koran that is the "real" islam. Their interpretation of the texts is just as valid as anyone elses, in fact you could argue that because they take a much more literal interpretation that they're "better" Muslims than any other denomination.
the thing about infidel stupidity is that slapping the word "islamic" in front of anything that is unislamic will automatically make it islamic to them
to the infidel, an islamic alcoholic can exist as long as he calls himself that and as long as the infidel can use the bizarre example it against the general muslim population