It's my honest belief that Bronies will burn their fandom down before the end. Eventually, they'll get too weird, and Faust and her gang will just give up and move onto other projects.
Faust already moved on to other after the show's first season. It should go without saying that some of the show's more obnoxious fans reacted very poorly when she announced this.
Fanboys in general don't care about quality. They just want something to obsess over until they can find a girlfriend to obsess over and eventually scare off.