The reason no one cared is because conservatives fail to fight the information war. Here is David French writing at National Review:
The momentous news of ISIS’s defeat was greeted, in large part, with silence. Why?
The announcement came on Saturday. Just three days before the Alabama special election that transfixed the nation, and on the same day that President Trump fact-checked the Washington Post’s Dave Weigel, Iraq’s prime minister declared victory in the war against ISIS. Iraq — with indispensable American help — has regained control of its cities and its border with Syria. ISIS has been reduced to a shadow of its former self.
The victory isn’t confined to Iraq. American-allied forces control ISIS’s former capital in Syria, and the world’s largest jihadist army is gone. Bands of insurgents still prowl the countryside, and ISIS cells exist across the world, but the war against the “caliphate” is over. It’s been won.
So why does no one seem to care?
It was exactly three years ago that the Middle East was in crisis. The ISIS blitzkrieg had brought Iraq to its knees. Jihadists controlled immense sections of Iraq and Syria. Abu Bakr al-Baghdadi spoke from Mosul’s Great Mosque, declared himself “Caliph Ibrahim,” and called on Muslims across the world to join him in his jihad.
They answered his call by the thousands. They flocked to Syria and Iraq from North Africa, Europe, and Asia. Britain was rocked by reports that more of its Muslim residents had joined ISIS than joined the British military. ISIS initiated genocide. It threatened the Kurds. It threatened Baghdad. Americans old enough to remember the fall of Saigon began to wonder: Was history repeating itself?
Read more: What if America Won a War and No One Cared?