They don’t. This author is mistaken. The left doesn’t love Islam, they hate The Beav.
You remember Leave it to Beaver, a typical show showing typical American society as it was? The left hates every single thing shown in that program. They are completely dedicated to reversing it.
Instead of men married to women, gay marriage. Instead of boys taught to act like men, boys taught to be girls. Instead of moms making home, moms building careers. Christianity, Automobiles, Law & Order, hard work, Fair play, pulling yourself up by your bootstraps, these are all hateful, despicable, horrible, no good, very bad ideas that the left must reverse
It is literally a case of throwing the baby out with the bathwater for them, but they don’t care. Social justice is a moral imperative. Sometimes you have to destroy the village in order to save it. And they are working feverishly with gas cans and matches to do just that.
Islam is simply one more stick to beat us with.

During World War 2, the Nazis recruited soldiers from Poland, Ukraine, Arabs, Asians, Russians – people who were slated to be enslaved at best, exterminated at worst. They were mans to the Nazi end.

Same with Muslims in the US and “Progressives”.