SCOTUS, in any generation of its 230-year history, has always managed to manipulate interpretation of the Constitution; mostly to their detriment [Both the Constitution and SCOTUS]. Take the first amendment. Its very first commentary deals with freedom of religion. it must have been important to founders, namely James Madison, to mention it first. We often refer to Jefferson, who was not the author, by the way, as offering us the language of "separation," as in of church and state. However, at the time, Jefferson was separated from both church and state while our ambassador to France when Madison wrote the Bill of Rights. But, the full descriptive of freedom of religion enjoins Congress to be forbidden to create a religion in the first place [the "establishment" clause] AND to not forbid practice of its free exercise.
The religion gig is followed directly by freedom of speech, and we manage to understand that one very well, unless we're talking about religion. After telling us we essentially have liberty to say whatever we damn well please, accepting all consequence of such speech, as is prudent, we interpret by back-up and say, arbitrarily, and incorrectly, that our freedom of speech is curtailed in the public practice of religion - any religion. Prayer, in public is taboo. The two interpretations combat one another, don't they? You think that's what Madison had in mind, who was the primary author of the Constitution?