There's nothing insane about writing a de/serializer for an open source format with tests telling you every time you get it wrong to fix in a loop. Insane would be if they were willing to entrust critical production data to their vibecoded replacements (in multiple ways).

Have they released this publicly? This seems about on the same order of difficulty to anthropic’s C compiler project, which ultimately failed. I’m surprised if they can do SQLite they wouldn’t show up Anthropic with a real working C compiler.

And they do it in powershell

You missed the "solve unsolved math problem, because all other are too easy" tasks