Hi Tom!
As others have said, wonderful chord progression and melody. It took my ear to the end of the song to get used to the harmonic flow, and to me, that is a good sign of a song that I can come back to again and again while retaining some freshness. Looking at the lyrics and listening to the feel of the song, I am assuming you were aiming for a certain humility feel?
Regarding AI, thank you for your workflow description. I am keen to hear a before and after - not to see which is best (because I would give that award to your own vocal) - but to see how the tech interprets the original. I’m not expecting you to do this - I am just pondering.
Great song - good job! I always look out for your contributions to the forum.
Andrew