If you can reduce a problem to a point where it can be solved by simple code you can get the rest of the solution very quickly.
Reducing a problem to a point where it can be solved with simple code takes a lot of skill and experience and is generally still quite a time-consuming process.
The open question is why people needed fancy AI tools like Claude to write CRUDs in the first place. These kind of tasks ought to be have been automated a long time ago.
It’s much easier to write business logic in code. The entire value of CRUD apps is in their business logic. Therefore, it makes sense to write CRUD apps in code and not some app builder.
And coding assistants can finally help with writing that business logic, in a way that frameworks cannot.