Because they did the same thing recently.
Now it's time for damage control. You can practically see the sweat dripping down Denyse "Sneery" O'Leary's face as she struggles to explain why intelligent design creationists have nothing, nothing at all in common with the totalitarian murdererers of ISIS. But her "explanation" consists of nothing but mangled bafflegab.
Since Denyse has a long history of making invidious comparisons, it's a pleasure to see her hoist by her own petard.