I watched the movie with what I hoped was an open mind, but I disagree with your assessment that it was some powerful coming of age story. The only point I really agreed with was the last one — that it is a powerful reminder that children need us to stop closing our eyes to real life.
Yes, seeing an 11 year old attempt to seduce a cousin for the benefit of keeping a phone and post photos that are DEFINITELY sexual is showing us the sexualizing of children. The film did not portray it in a positive light, but it was disturbing. I cannot pretend to be happy to see the producer, director or Netflix make a fortune off the controversy.