That doesn't really address my point. Of the gangs like Daesh, most of them today are Islamic. Why is that? Why is Islam able to be twisted more easily than other religions.
There s no religious authorities within Islam, an imam for instance has no authority over a believer, this latter if knowledgeable enough can challenge the imam integrity or relevancy.
You, as US citizen, can convert to islam for instance and it would be much easier for you than for a muslim born man to have authority over other muslims, to summarize this is a religion for individualists where it is considered that no man can intercede between another man and god.
Consequence is that it s easy to instrumentalize this religion for one s own interests, just look at Arabia, they have a mock of a religion authority used to legitimate a kingdom.
Now to better understand what is going on in theses brains i advise to read some philosophy from Kant.
