Sounds like a lot of Europeans are delusional. That would explain a few things.
The article also fails to mention that the former great powers of Europe have little choice but to appease the Islamists because they are no longer great. They have little ability to project military power, their populations are in decline, and their economies are dependent on cheap imported Muslim labor.
To put our foreign policy in thrall to Paris and Berlin under such circumstances would be an act of insanity,