There's easily a century between the earliest accurate map of Edinburgh and the earliest accurate map of the world. And even at present, the accuracy of maps of Edinburgh is much greater than the accuracy of maps of the world.
So yeah, the whole world could be next. But the person you're replying to has a point when they say significant improvements are needed.
I don't understand all this rushing and skepticism when such amazing science is being done. It's not like some AI company marking claims to sell a product, it's some researchers trying to accomplish something. Yes, they should (and probably will) do it better but that's not the goal here.
If 3 million manual edits are still doable then it's ok. And when the manual step is not feasible, a jump in the tech will be required.
To put a fine point on the difference in scale:
Edinburgh[0]: 264 square km
Earth[1]: 510,000,000 square km
0 - https://www.britannica.com/place/Edinburgh-Scotland
1 - https://www.universetoday.com/25756/surface-area-of-the-eart...