It's pretty consistent. If you check out something from a Gentoo-official repo, it's going to have been created by humans without the use of LLM tooling. LLM tooling is used for the kernel, systemd, and a litany of other packages -- trying to run a "non-LLM OS" is more like a fork of the whole ecosystem than a distribution.
I can appreciate the concept that Gentoo is placing a high value on human curation. I used to be firmly against our anti-LLM policy, but honestly it's a pretty strong differentiator from other distributions -- and I'm getting more and more sick of AI tech in general.
(note: I am a Gentoo developer)