Zac Efron: Replaced by Backstreet Boy Wannabes? Is this true?

Like a month or two ago, everyone was like ZAC EFRON OMG!!!!!! High School Musical "What time is it!! SUMMERTIME" (when I was like in September, oh the irony) and now it OMG Joe Jonas!!!! YEAH Camp Rock Jonas Brothers!!! Whooooo! Is Zac Efron not cool anymore? When was he replaced? What's Camp Rock? And is Dylan and Cole Sprouse still cool? Who have they been replaced by? Does Cory in the House still air?