So I looked it up. Google's AI search results say ”While Tokyo is often listed as one of the most expensive cities globally, its rental costs are often lower than cities like London or New York when considering comparable apartment sizes. ”
Being cheaper than two of the most expensive capitals in the world doesn't seem like it qualifies as objectively affordable. More research needed I guess.
I'm not sure what they mean by cheap, but the tailors and shoe cobblers are saying this themselves.
They might just be talking about commercial real estate rents.
I certainly don't see the teeny tiny shops that are packed next to each other almost like a shanty town in Manhattan or Beverly Hills so maybe per square foot it's comparable but you're not being forced to rent 10,000 square feet.