Does terrorism really work as an argument against Islam? There are so many other factors in play, and factors which are present in non-islamic terrorism too. Robert Pape argues that geopolitical factors are the most important, which is why Islamic countries without those factors weren't drawn to terrorism.
Islam, like any religion, will make people value something greater than humans, which is always going to be a negative, albeit quite a subtle and society-wide negative.
I feel like by using terrorism as an argument we march into an academic debate despite knowing nothing about it.