Admittedly, the reasons I enjoy it as a Prog song are very valid criticisms for any actual music. From the pretentious lyrics to the point of nonsense to the sudden jump from a dramatic pop ballad with classical instruments to an attempt at an upbeat semi-rock bridge (
that was soloed over by Glen Campbell).
Relatedly, I really like using Heart of the Sunrise as the prime example of, not the best Prog rock song (though it is very good) but one whose structure very clearly and distinctly exemplifies how Prog songs differ compared to Rock’s standard three verses and a solo.