AI will be used. If not then the project will be formed and the fork will get leaves better than the human slop version.

I heavily doubt this is actually the case.

But perhaps you can help out and show me some convincing real-world examples where large, mature, abd widely used FOSS projects were forked and became significantly better because use of LLM code generation?

We have these things now for at least a year and as the old saying from the dot com era goes, Internet years are dog years, meaning a three year old dog is adult, so there must be a really successful application of that LLM technology in software development?