The demo video takes you through creating a full blown database backed app with maps and other geo features, from nothing more than an initial CSV file. The code backing the app is represented as database tables, so you can use queries to explore the app.
The core issue is really the same one the no-code/low-code platforms have always had, or even that VB6 had - the ramp isn't smooth. Eventually you hit the limits of the tool or there's a business requirement the tool can't meet and you get stuck. Often that requirement may be something indirect and non-obvious, like growing the team to the point where you start needing 'real' abstractions, or keeping up with some new feature the underlying platforms added that competitors are exploiting but which aren't exposed. Hence why so many companies have mobile apps that are just ordinary Android/iOS apps instead of written using low-code tools.