Fanbase, maybe. Software engineers using these projects? Probably forking and updating themselves.

FWIW, I've opened a half dozen PRs from LLMs and had them approved. I have some prompts I use to make them very difficult to tell they are AI.

However if it is a big anti-llm project I just fork and have agents rebase my changes.

Your employer allows/encourages this? Do you run that stuff in production? Would you mind telling us where you work so we can avoid using their products? It is just not possible to trust the software that emerges from the process you've described.