It feels wrong to write this off as a 'parody film' when it is genuinely an amazing comedy/drama superhero postmodern FILM, its a real film. When you hear 'parody film' you might think of 'Scary Movie' or 'Disaster Movie' but this film uses other material in such a transformative way that it does actually become original stuff.
The film is moving, its funny, its charming and smart and its a real shame that WB threatened litigation against a genuine work of art.
This film is obviously most enjoyable if you know the batman mythos/and or know the aspects of the queer experience, but I think this film would still work even if Batman was not a real thing and was only invented for this movie.
I would say to anyone who has an opportunity to see this movie, to take that opportunity cos it might be your only one.