I looked it up and a block in Chicago (where I live) is between 100 to 600 meters.
Chicago and New York have similar walkability, at least in my experience.
Nearest Grocery Store is 1.2 km (0.8miles) away from me, I usually take my bike to go shopping
Nearest park is like… 50 feet from me (15meters) but I happen to live right next to a park.
Nearest cornerstore is 300 meters
Nearest train station is 600 meters
Nearest library is 800 meters
To add some more,
Nearest bar is 400 meters away
I’m a musician, within 1km of me there are 4 open mics I can go to
Nearest theater is the Music Box which is 1.2 km away
Nearest baseball stadium is 1 km away
God I love Chicago
Yea, I think it went off the rails as soon as broad generalisations were used as to predict the motives of the sex worker. People go into sex work for many different reasons, and that is an important thing to know when piecing together the advice given.