I have also been a life long fan of Queen. My JW parents were not happy with me listening to this obviously gay singer and then there was this Watchtower stating that "Another One Bites the Dust" is backwards "It is fun to smoke marijuana".
However, I liked the movie which got me somehow emotional. I recommend to watch it in a modern cincema. The sound is fantastic and so are the scenes of the Life Aid gig.
But I would have expected that it also touches the later years of the band.