He does but it's inferred.
Song writing is an art it's not like a technology where you can point to power usage and how v 2 is better than v1 to show the thing is now better, great.
He goes into great detail about the entire songs it's never just "point to a thing" and say "there it is". He'll describe how the choice of the wording, the chords, what scale e.g. "mixolydian vs dorian", how it all combines to make the song great.