The point of TFA is that you just need to be together with friends, i.e. having dinner or hanging out at each other's houses most likely. You don't need a bunch of amenities.
We seem to be doing life backward: We live alone and expend effort to gather together, as if that’s the healthy baseline
It's easier to make new friends in a top-tier city, especially if you're the kind of person who likes those amenities.
The alternative is staying in some backwater place just because one of your friends is there, and you have absolutely nothing to do there except hang out with that friend, while being constantly frustrated with all the other aspects of life in that place.
We seem to be doing life backward: We live alone and expend effort to gather together, as if that’s the healthy baseline