Yep, I do not have any knowledge about NY jazz scene or Jazz school, BUT I came to the same conclusions when I saw the film back then: it's a brilliantly acted and directed sport movie with drums in place of ball. What I didn't like is exactly what dislikes the author of the review: jazz is a decoration, a misplaced one IMO. I mean I could set Richard III as a mobs movie because both Shakespeare and mafia are about struggle for power, revenge, betrayal, family, violence. Backlash lacks a true relationship between the plot and the music.