It’s definitely true. There are so few places that are really walkable in the US and the demand is quite high… once you live that way, it’s hard to go back.
We really need to build more walkable areas, but it’s difficult for a lot of (mostly-nonsensical) reasons.
The only thing to keep in mind, however, is that the math changes significantly when you remove cars from the equation. Our rent is higher than somewhere less walkable, but it’s also roughly equivalent to the full price of owning two cars. So comparatively, we save a bunch of money despite higher rent.
It’s a fun story, however I also found it really interesting after learning German that this is really overblown outside of Germany.
I once tried to reference it with German friends and they didn’t even understand why it was supposed to be funny!