It's What You Want To Make Of It, YMMV* --- Personally, I loved it and think of it as a very entertaining and engaging sci-fi centered linking of characters and situations through their individual song Narratives. Loved the soundtrack and band -- Great feeling music, remeniscent of Tom Petty and the Heartbreakers, but with enough special sauce to make it their own sound.
Time well spent bc I dropped my Egotistical judgment and Allowed the energy and Spirit of the movie in.
*Your Mileage May Vary - meaning that some egos may try to convince some folks that the film is thinly disguised propaganda promoting the music and the band,
And so what if it is? I still found it entertaining and very cleverly done (once I sidelined my judgmental ego).
If you don't like it, there's no reason to do an ad hominum rant tearing the author/composer apart as if he personally insulted your superior intelligence. Love thy neighbor (from a distance of six feet, of course).