I think we're in agreement about the basic problem, Islam is in need of a dominant, moderating interpretation of the Koran. If, as the article suggests, the more recent, violent passages from the Koran are the tool of Islamists, then the rest of Islam needs to push for a different reading of the book. It's their book, and that's not going to change in the near term. It would be better if they read it back-to-front, rather than how we read the Bible front-to-back. Abrogation is a problem that might be addressed, converting them in the next 20 years is not.
Much of the anti-semitic pogroms and discrimination over the centuries by Christians exploited only a verses from the New Testament. The actors claimed Biblical support for their actions. Islam's current state of affairs is easily reached in troubled lands where relegion is used as a tool to manipulate the masses. It doesn't take much to awaken the evil within men.
There are two prisms through which to view Islam.
The question begged is...is there a spiritual domain in which there is there a force of Good and an opposing force of evil...or is this world all their is. Complicated proposition but go with it for the sake of discussion.
If there is no spirit world, Islam is just a political problem or a socio-political problem (religion being mere superstition). If that is the case, no problem. The threat of Islam can be managed.
But if there is a spiritual domain...and if Islam is, (to coin a Forrest Gump kind of term, "evil is as evil does")...evil. If there is a spiritual force (of evil) behind Islam...it isn't going to step aside when moderates try to bring Islam to an acceptable center.
I think we are all beginning to see that Islam isn't a secular faith. There is a driving force behind Islam. And it isn't friendly.