That is indeed a "stupendous change," and I think the author is right: the US is going to blithely ignore it.
I have been concerned about Tunisia because it is now a vacuum that will no doubt be filled by Islamists (with the encouragement of the US, probably), and Egypt of course is a serious concern.
Islam has always been about "offensive jihad," but the muftis and head honchos haven't dared to admit it because of the weakened condition of Islamic states for so many decades, if not centuries. However, what they have learned is that while the West may be stronger, it is not on the offensive against Islam or even resisting it in any way, and therefore it doesn't matter that the Islamic states are dysfunctional or weak. They know now that all they have to do is push at the door to the West and it will open.
I’m afraid you’re correct, at least for now.