Your appreciation should come from the one shot prompt. It's a direct comparison to Astra's one shot. I feel like you and many others are trying to "appreciate" the wrong thing.

If the creator truly wanted viewers appreciate the end product they'd start with the one shot output and spend their weekend iterating on each city either by hand or with Claude. But they didn't want to do that, they wanted to show off what Claude/GPT could do in 6hrs. That's the whole blog post.