The article is about Anthropic's contribution to Python. Pretty much all of their code talks to an LLM.
And just a few comments earlier you said:
> Just recently I heard that typed languages are best for agentic programming
Are we not talking about using python (or some alternative) to constrain the behavior of agents?
I was more thinking of python used as general purpose backend language. We can use LLM's to vibecode such languages.