Like pjtexas I'm puzzled by the negative comments, I found the film fascinating. The film was about more than 'Don and the song', and continuing interpretations of the lyrics - that's been done to death. It was about the enduring impact of American Pie on listeners. I hadn't heard of Jade Bird either (though I'm also English), but the point was that she wanted to record a song written by another 25 year-old singer-songwriter 50 years ago. Neither song nor film may be technically perfect, but it's how they make you feel. I'm not just English, I'm an emotionally reserved Brit - but I was moved by both. Good job chaps!
