zahavasdad
A person must go to work to feed their family. However you are correct. One who has no need to go to Manhattan but does so anyways just to “hang out in Manhattan” or whatever and boards a train to do so is likely oiver on some issurim for both what he sees and hears on the train and in Manhattan.
Sadly many people dont know what you are talking about when you mention Kedusha, Tehara, Prishus….