When the constitution became a “living document” it started dying, as it then failed its original purpose. I have always been a strong defender of First Amendment freedoms, and in my life time, the First Amendment’s protections shrank as new “crimes” were invented that took perfectly normal acts of expression and criminalized them by claiming some criminal intent. “Harassment” tops the list. Now they are destroying the idea of a “Republican form of government” with blatantly rigged elections. Something must be done. Yet, nothing has been done.
I think you and I have a different definition of a "living document".
IMO, the Constitution IS a living document, and that was by design. The Founding Fathers were smart enough to know that they didn't know everything, and so they gave us a way to change the Constitution, i.e., it's "alive". To be sure, they were conservatives and made it difficult to change, but it has been changed numerous times, though not lately.
I think your definition of a "living document" is one where the original document is largely ignored, and judges rule the way they PRETEND the document was written and the way they WISH it were written. If that's what you mean, I agree with you.