When I was still a member of what is probably best termed the British Jihadi Network - a series of British Muslim terrorist groups linked by a single ideology - I remember how we used to laugh in celebration whenever people on TV proclaimed that the sole cause for Islamic acts of terror like 9/11, the Madrid bombings and 7/7 was Western foreign policy.
By blaming the Government for our actions, those who pushed this "Blair's bombs" line did our propaganda work for us.
More important, they also helped to draw away any critical examination from the real engine of our violence: Islamic theology.
If we are to believe this writer, we can plainly see that there is a religious component involved here. That doesn't mean there isn't a political one, it just means there are some that truly want to establish theocracies, in place of stable democratic republics. It's not about justice. It's about empowerment and oppression, as outlined in some medieval interpretations of metaphoric texts. But most importantly, it is about enslavement of mankind.
So, the next time someone says this is an economic cause and uses some descriptive analysis of unjust economic conditions in the Muslim world to illustrate it, you can at least have this article (written by a former jihadist) in the back of your mind to aid you in your search for the truth.