One thing I've been working with is this little util to try to do a quick sniff test on the contributors: https://github.com/2ndSetAI/good-egg (Longer explanation on Substack: https://neotenyai.substack.com/p/scoring-open-source-contrib... )
From what I've seen in the data, acceptance rates to all major OSS projects are down since the age of coding agents.
And when I talk to maintainers, most of them are talking about some version of doing fast and easy pocket vetos (leaving the PRs to rot) or even just banning on the first offense.
It's been building for a bit, but I think the crisis point is solidly here. And things like OpenClaw turn up the dials. I'm sure more tools and changes to practices will be coming.