Rather than seeing this as an exposition of "people on social media are so much more bland than they appear" I found myself feeling "people on the subway are so much more beautiful and interesting in their 'real life'"
I feel like that might be backwards from how it gets presented elsewhere.
But, if you look for example at the blonde woman snarling a piece of cake https://birdinflight.com/ru/vdohnovenie/fotoproect/06042016-... (second last) I thought, that was charming and funny... But you'd never know that from under they grey fluorescent lights of the subway car.
It's really interesting to be confronted with the realization that every single person filling up space on the subway around you has a rich and lustrous story that brought them to that place and time.
Still, super creepy.