Have you ever wondered the motivation for that?

He's stated his intent. He sees a destructive force building on the Left. It's been building for some time. The 'regressives' we hear so much about today. Those people who would have women in modern, western countries wear more 'appropriate' clothing, so as not to tempt the poor refugees from war torn whereveristan into raping them, as one example. Notice, I'm not attacking refugees here. I'm attacking people who wouldn't have them conform to the social norms we accept in the west (Tolerance of independent women, LGBT+ people, etc) and who believe it is racist and imperialist to hold immigrants/refugees to the same standards of adult behavior that we expect of everyone else.

Islamism does pose a unique threat to the United States. It also poses a unique threat to Syria, Afghanistan, and countless other countries. What makes it unique in the US and most of Europe, is that we have a horde of people in our countries rushing to defend the rights and freedoms of the radicals to oppress and violate others. You won't find sympathy for Daesh among the Kurds. You won't find people calling each other 'Islamophobic' when there are Muslims fighting Muslims.

I am openly islamophobic. I am also openly christian-phobic, jew-phobic, and phobic of all religions that can affect behavioral change on their adherents beyond regularly attending religious services.