Another swing and a miss Bochis. 

Firstly, I never said that there wouldn't be an Islamist link. Only that one had not been proven at the time I posted my comment. An actual link is still yet to be proven. 

Secondly, ISIS can "claim" responsibility for whatever it wants but that doesn't actually make them responsible for this until the perpetrator's motives are really known. 

Thirdly, ISIS doesn't represent the millions of non-radical Muslims across the world. 

Lastly, there is no evidence to support your contention that all Muslims adhere to those elements of Islam that you highlight just as there is no evidence that all Christians adhere to the more ridiculous and radical parts of the Bible.