Cuelang is not simple or well documented. It's the "right solution" but it's not polished currently. There needs to be a lot more examples to pull from.

There's a dramatic difference between: https://cuelang.org/ and https://jsonnet.org/

I have a feeling that cuelang is still in the R&D phase. Once it's finished that I'll probably move everything I write to it. It'll probably focus more on UX and tooling and simplicity after it moves out of the R&D phase.