I would be curious to hear his experience in other cities. It would be a great way to figure if this is a cultural issue specific to a region or if people really are generally terrible.
(It was a little awkward, because I don't know any blind people, and wasn't sure how to help her - I started out offering my arm, then realized she couldn't see it, then sort of slid it under hers, and she jerked away. I felt like an asshole; clearly I should have asked her what she would prefer, or at least announced what I was going to do. So if anyone else is ever in the same situation, think about it a little more than I did.)
I've seen her now and then in the same subway station, so she may have been starting a new work commute.