I don't think that is the case here. Bun is pretty much using AI to write all of it's code, with a human reviewing it. Zig exists as a language to provide a nice DX over C and Rust, not to be memory safe. If you are using an LLM to generate code, the DX benefits are removed and so then why would you ever choose Zig over Rust?
The industry as a whole still is realizing that any LLM usage that actually writes all the code for you is causing cognitive debt, and we’re even slowly losing our skills of the art.
I’m trying my best to navigate this myself, but no matter what we do, using LLMs is both a blessing and a curse.