Gene Park writes a broad feature of the rock band, Ninja Sex Party. The feature is broad, covering topics like their beginning and how they became popular.
The story has the frame of the positive view of the band or the frame of let me introduce you this band. The details included are the broad ones that cover everything that a person needs to know about the band. The details that are left out is that Wecht is a dad and Avidan was once a heavy pot smoker.
The nut graph is probably the third graph since it tells you all that you need to know basically.
“quintessential internet band,” in the third graf, does sound like a frame. (That paragraph, though, does not make sense to me.) The writer is suggesting you understand the band in a particular way.