It's really much more complicated than that guy is making it out. See, the way the establishment clause in the first amendment is phrased, it's pretty general. And that's because it's supposed to be open to a certain amount of interpretation. The concept of separation between church and state is pretty clear in some instances, but in other instances, it becomes super super blurry. I get what the guy's trying to say. It's really just not that simple at all. Just throwing that out there :)