I think you are taking a rather jaundiced view towards politics - by and large it has always been about status and spotlight just as much as being about people and making things "better", however imperfectly. Being young does not excuse one from learning about the reality of power - and there is nothing more disempowering from disengaging in the process.
And if one thinks that youth are beyond these kinds of behaviour - just look at the politics of popularity in high school. The stakes are low, but the emergent behaviour is all the same.
AoD