>Which means what propels the backing music of the song of each section isn't interesting harmonies/chord progressions but the groove itself.
Except you're wrong. Steely Dan aren't a funk band. They're a songwriting band. Their songs groove cus they're professionals and they want their songs to have killer rhythm tracks. But one of their most defining characteristics is that they use interesting harmonies and chord progressions. They took chords that were rarely used in pop music and made them the basis for their whole sound.
>Regarding the 3-5 minute length. Yes it's normal length for pop songs but like I mention before bob Dylan ruin pop music by expanding the pop song length from a 2-3 minutes to 3-5 minutes. It's not 60's rock compactness
you're saying 2-3 minutes is superior to 3-5 minutes... so is a song that's 3 minutes long good or bad? What is the exact cut off point? Is a song that's 3:29 good but a song that's 3:30 bad. Making judgements by a song's length is almost comically asinine.