"Religious freedom laws are, of course, disastrous for science."  
mcknight doesnt understand science. science doesnt "choose" nor is "disastrously" affected by anything. it is method based on evidence.  

"But it doesn't mean that supernatural causes don't exist" No, it doesnt. there may very well be a flying teapot and giant spaghetti monster pulling our strings, however, it is too unlikely. And we've done a lot better using the scientific method to understand natural phenomena than we have making mythical monsters in our image to understand the world.
Suggesting science and religion "co-exist" is a subtle but false equivalency peddled by those like mcknight who believe cultural myths. People should have the freedom to believe whatever religious silliness they want, just dont to tell the rest of us the sun revolves around the earth, that women are made from men's ribs, or that we have to bow down to a boogie woogie sky monster born out of ignorance and fear thousands of years ago.