I'm eighteen and only recognize three of these bands... I would consider myself pretty "in the know" about warped tour-kind-of-scene stuff too...so I don't think that's it...
You know you're old when you barely recognize any of the bands on Warped Tour
HAHA this is how i feel dude! what happened to warped tour being reserved for punk, ska, reggae, acoustic type acts and pushing all the hot topic bands to mayhem/uproar...oh well...whatever draws the children