Agreed - I haven't seen the film but I saw the play at the Wintergarden Theater in the 80's.
It was mostly spectacle in the theatrical sense. Not much energy or emotion.
Definitely a 70's vibe. Mama Mia would be in the same category. Discrete songs with little connective tissue.
Les Mis pulled off both spectacle and a good story with a score with a through-line. But that came later and everything evolves including theatre.
Even so ALW scores are very popular, though they bore me to sleep.
I can't imagine spending any mental energy hating a film. What's the value?
Go see a better film with that time. Or go for a walk in nature.