Right now it looks like they don't, but if the city wanted to it could. I visited seoul last year and one of the coolest things for me was that in most of the city they had a small yellow rubber path along most all sidewalks, roads, and metro stations; the path had several small ridges which ran parallel to the path.

At first my partner and I had no idea why these were here until we were taking a walk on Namsan mountain and saw some blind folk strolling freely along the roads using the path to navigate with their walking sticks. It was incredible once we realized the extent of this network and how much freedom it added for those with vision problems. Still not sure if that is why the paths were there but their use by citizens was clear.

I dont know if it would help in a free-for-all space like this, but cities could help their citizens with disabilities better.

They don't unless planners account for them. (It's brought up in last couple paragraphs of the article)