When you feel they are toxic or harassing you and you don't want to deal with them anymore. If you're overwhelmed, say that you're busy and will attend to issues and PRs when you have the time. If you want to be accommodating, have good build instructions or action workflows so that people can easily fork and build it themselves.
If you ask me, LLM-generated things should just be banned outright, but I suppose other people's definitions of "community" include them.
> If you ask me, LLM-generated things should just be banned outright,
Why? In the end it's a patch's quality that counts. Regardless who or what contributed it.
Bad patch from trusted contributor is still a bad patch.
Perhaps this is more a management problem. How to best use developer's time, where to use AI (vs blindly deploy AI to generate patches & swamp developers with that).
Or do some rate-limiting? "Sorry, we accept no more than 10KB worth of patches per week on this project! Try again next week after we've reviewed this week's batch".