NetBSD's Commit Guidelines state:
Code generated by a large language model or similar technology, such as GitHub/Microsoft's Copilot, OpenAI's ChatGPT, or Facebook/Meta's Code Llama, is presumed to be tainted code, and must not be committed without prior written approval by core.
which to me implies that LLM code can be accepted in certain situations. Doesn't read like a blanket ban to me.
See: https://codeberg.org/ethical-foss/open-slopware#operating-systems