Can we then say that ISIS are more Islamic than Maajid Nawaz?
Yes/maybe and no/maybe. Look at the dictionary definition of Islamic:
1.
the religious faith of Muslims, based on the words and religious system founded by the prophet Muhammad and taught by the Koran, the basic principle of which is absolute submission to a unique and personal god, Allah.
2.
the whole body of Muslim believers, their civilization, and the countries in which theirs is the dominant religion.
I think the answer is yes/maybe according to the first definition, maybe/no according to the second. And we can parse this endlessly in a tiresome religious debate, for instance we can debate if a person can fully submit to allah if he does what the head of the islamic state does and bla bla bla. At the end of the day we get to the problem that all of it is 100% made up bullshit and trying to accuse someone of making something up is moot. Compare to the various attempts to even define "true Christianity".
I digress. I don't think this answers what it means to be a "good Muslim"
I have no IPhone. Please just answer the question. Thank you.
Are you really unaware what Islamic State tries to accomplish or is this some kind of rhetoric device I don't get?
If you are not aware of what the Islamic state tries to accomplish I will really recommend you to read the wikipedia page.
If you are aware and this is some kind of silly rhetorical device perhaps we can just skip it?