An understated movie given all the high budget superhero schlock still washing around.
The acting is almost kitchen-sink realistic with none of the usual superhero overblown BS.
I can see why some folks have found this a slow and possibly unrewarding movie. What I found was an intense story of a normal childhood and what could happen if you were a super-powered alien, lied to, lonely, and living in brightburn.
That the movie has a really confined scope, brightburn, and everything happens there reminded me of the confines of a horror movie. One where you discover the horror is closer than you thought.
Puberty changes everything for children and parents. Though this movie does push things far, the events are similar to those for some families. Just magnified by super-powered vengeance.
Get over the other, flashy, superheroes and put yourself in the shoes of people in a regular town with some scary things happening. It’s just how that Clark Kent guy could’ve turned out if he’d had regular parents rather than comic book saints.