Not too bad
The movie itself is not that bad, kind of funny in a random way.
The problem I have is with your knowledge of Emo. A lot of people including yourself have abosolutely no clue what Emo is. Emo originated in the mid-1980s D.C. scene, with the band Rites of Spring, as well as bands such as Fugazi, Moss Icon, and Antioch Arrow.
If you listen to any of these bands you'll notice that they don't sound like any of the bands the media portrays as Emo. (eg. Good Charlotte, Simple plan, The Used).