I am afraid my commonsense observation just can't get through the heads of people bound and determined to use the federal judiciary as a sort of Sanhedron. It's not designed that way and eventually that ambition is going to result in the total disestablishment and reconstruction of the judiciary ~ and possibly in ways the religious fanatics who want the judges to rule on their personal beliefs don't count on.
Are you saying that ruling on what is or is not religion is in itself establishing a religion?
And that drawing a line between what is science and what is religion can only be done by defining religion either directly or indirectly and therefore the judiciary is taking control over areas that our government should not be involved with?
Nowhere does the Constitution demand that religion is something that a judge cannot discern. That there will be no “religious test” as a requirement for political office also makes incumbent upon a judge a determination of what is a religion, and what would constitute a religious test.
Your supposedly commonsense observation that Judges somehow cannot determine what a religion is, is not sensible. Neither is disagreement with your statement tantamount to a determination to use the judiciary as the ultimate arbiter of all things.