An ancient key to Tenet?

I hadn't heard about this before:  Nolan's film Tenet seems to have clear ties to an old palindrome square:

The ancient palindrome that explains Christopher Nolan’s Tenet

A puzzle dug up all over Europe holds the key to Tenet — and turns it into more than a movie.

I'm not sure if I should see the movie at the cinema.  It seems to universally be considered far too complicated and puzzling as to what is going on, but many reviewers think it is well worth the viewing anyway.