Their boilerplate answer is that Muslims didn't push Prop 8. Muslims aren't pushing ID in the classroom. Muslims aren't stopping the boys and girls from marrying each other.
You'd think there was this jack-boot of religious oppression on the average US atheist's neck.
I imagine the gay marriage thing is a bit of a pisser, but, really. Their hatred of Christianity is so acute, they're almost apologists for other faiths.