I don't see how the two are related at all. A blanket ban on LLM-generated code is at least arguably a reasonable policy.
No, I don't think it is. There's more nuance to this debate than either "we're banning all LLM code" or "all of our features are vibe coded".
A blanket ban on unreviewed LLM code is a perfectly reasonable way to mitigate mass-produced slop PRs, but it is not reasonable to ban all code generated by an LLM. Not only is it unenforceable, but it's also counterproductive for people who genuinely get value out of it. As long as the author reviews the code carefully before opening a PR and can be held responsible, there's no problem.
When there's a grey zone then there will be lots of pointless discussions like "why was this AI-generated PR accepted but not mine" etc etc...
However, I don't think that banning all AI-generated code is reasonable. Having an LLM generate a couple of functions or a bit of boilerplate in an otherwise manually coded PR should not invalidate it from being accepted if it's helpful.