> Agents really do not care at all how "nice" a language is.
People do care.
> You only need to be picky with language if a human is going to be working with the code.
Sooner or later humans will have to work with the code - if only for their own self-preservation.
> I get the impression that is not the use case here though
If that's not the use case, there's no legitimate use case at all.
> Sooner or later humans will have to work with the code
We want that to be true, but it's starting to look like it might not be.
I might have misinterpreted what the submitted link is offering then. I thought this was some "secure" sandboxing thing where agents can write ephemeral scripts as tool calls to take arbitrary actions. No human will be looking at that. It's not checked into a repo and is not maintained.
One-off throwaway scripts can be written in literally anything. It does not matter.