A lot of work and code is Debian specific, and so there's a choice to be made about LLM use for that code, as there is for any project. And there are questions about LLM use in mailing list discussions, bug reports, and other non code interactions. Most of the options take a position on that (i.e. impose some rules for those contributions) one way or another.

What other projects choose on the question is interesting and might inform the choice, but what e.g. the kernel opts for doesn't control what Debian decides for itself, any more than the kernel's choice imposes any requirements on Rust or glibc or gcc.