Post ain't about project written in LLM (and Rust one have 6 months in good ol' craft code) but about contrast between two variants.
While personally I'm skeptical about LLM usage (and vibe coding in general) I'm not going to pretend it doesn't exist just on principle. I wouldn't risk rewrite 6 months worth of code to Rails but it's a perfectly good case for LLM conversion.
As long as upper management is measuring AI tools at work not much power is left.
The whole idea with UML jockeys is that we no longer need brick layers, that is the whole point of software factory concepts, and stuff like Rational Unified Process.
The only difference is using markdown this time around.
Programming languages don't really matter outside craft programming.
As LLM improve, it will eventually be a matter to specify in which kind of language the specification should be generated.
The UML and RUP crowd has had their vengeance.