I think it's clear that no one here wants to harm the historically significant, and beautiful, art deco portion of the station. It's also clear that some people just want to be upset and blame other people (millenials, really?) for changes. Those damned young people with thier opinions.
Since being socially tone deaf is kind of a thing these days, it might be worth noting that a common trend among millenials is, in fact, the maintenance of the historic and aesthetic portions of structures while reutilizing the space. Take a look at how many old mills and factories have been saved from leveling by being changed into apartments. As our manufacturing base is long since gone, and since any manufacturing concern would want a new building to operate out of anyway, it is these "millenials" who are choosing to save the nice looking portions of the space. I would doubt there are many "millenials" who have some desire to destroy a beautiful space that has no other function than acting as a transportation center.
As far as I cantell from reading this thread, everyone is in agreement that the main waiting area and the beautiful parts of the station ought to be maintained and that the real changes need to come to the platform areas. Yes, it requires money, but this thread is about suggestions for improvements and reasons as to why things are so dirty. Saying things about addressing complaints to the Christie administration doesn't really add anything to the conversation, IMHO.
Be well. Do good work.
Semperfidelis