The quotation is a collection of truisms. Beyond that, it's terribly written. Of course many mass movements identify villains. Isn't the important variable whom they identify as the villain and what means they employ to take down that villain? In this case, Islam's holy books identify the villain and the means to destroy it. We see evidence of this in whom they target and the means they employ. It is directed by Islamic texts. If your argument is that these folks would do the same if they adhered to a different religion, we would see similar numbers and scales of terrorism from other younger males, mostly from middle class homes, in societies that are predominantly Christian/Jewish/Hindu/Scientologist/New Age religionists, et cetera. We do not. Islam is the crucial variable here.
I have no idea what source gave you that number of 100 terrorist attacks. Here's a list from December, 2016 alone: https://en.wikipedia.org/wiki/List_of_terrorist_incidents_in_December_2016
Atheism is a belief system. Atheists believe there is no God (in contrast to agnostics, who do not believe and are simply unsure). With regards to Stalinists and Nazi leaders, they believed they would not answer to any higher power for their actions as they "improved" humanity. Both had mixed in a good dose of scientism. Unsurprisingly, when a group believes they will not answer to a higher power and they have the means and rationalization for "improving" mankind, we see millions die.
The problem with Islam is that it has no New Testament and no Ten Commandments.