When Beethoven wrote one of his symphonies he may also/or not have conducted the orchestra to play it. This could be said to be unique, as it his original score and his interpretation of his score to performance. However, someone in the future may conduct a version of this symphony that most people consider better, but both versions come from the original score. This does not detract from the value of the writer’s original interpretation, but let us also remember that the original orchestrated by writer of the score, was also performed with the instruments and technology available at the time. Future technology may allow a better interpretation not available to Beethoven at the time.
Does this help, as I also am not trying to start an argument, it is just my opinion.