> Memory safety is just a tiny part of over all security.

No, it's a pretty massive part with disproportionate severity.

> If a LLM can transcode correctly, then it should also output 100% correct C code.

Translating code seems to largely rely on having a strong suite of existing tests, not on ability to code correctly.

It's unclear if LLMs are great at writing safe C code, it's much clearer that they can meet targets with external feedback properties like "test passes/fails".

> On the other hand, If a LLM cannot correctly transcode, then using Rust may just make the bug soundless, because the language runtime/code-gen "avoided" usual punishments that might make the bug (and bug report) obvious.

This is very unclear to me.