Earlier quoted context omitted.
Uhh, maybe US cities haven’t, but here in Tokyo I never smell feces, step on needles, nor are there hordes of homeless people in every major part of the neighborhood, in a city that has affordable housing, a truly phenomenal public transit network, streets that pretty much never have potholes, and endless cultural and culinary amenities, in a place with GDP per capita far lower than SF. And it similarly was the case…
I don't think you are reading the parent poster. Tokyo was probably rubble in 1945 then it re-invented itself into a world-class city. Hong Kong was (probably still is for now) a world class city for the rich and the free and now is on path to become a hell-hole for both. Cities swing through a pendulum of up and down. SF might be going to ruins but it'll be back. It might have to reach rock-bottom first before re-in…
That said, the city does not have visible homeless or crime problems of most large US cities, partly because you can legally get a coffin for $300/month.